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Patent landscape, scope, and claims: |
Patent 7,731,690 US: Apparatus claims for gas-driven medicament delivery with puncturer offsets, actuators, and biasing members
US Drug Patent 7,731,690 is directed to a gas-pressurized mechanism for moving a medicament container inside a housing. The core claim architecture is consistent across independent claims: a compressed gas container, a puncturer used to access gas, an actuation member moved between configurations/directions to trigger puncturing and/or release, and a biasing member that urges the actuator or release member toward the trigger configuration. The distinctiveness in the claim set is the repeated emphasis on relative axis offsets (longitudinal axes of the gas container and medicament container) and the kinematics of how puncturer portions and/or gas containers translate between configurations.
Below is a scope and claims breakdown, then a practical US patent landscape map aimed at freedom-to-operate, design-around, and litigation risk.
What is the scope of US Patent 7,731,690 and what does claim 1 actually cover?
Executive scope answer: US 7,731,690 covers a handheld or device-like apparatus where compressed gas is released into a gas chamber (or otherwise acts on the medicament container) to move the medicament container through the housing, with actuation achieved by a puncturer mechanism whose engagement with a gas container is defined by actuator movement between first and second configurations, and with a biasing member that drives the actuator toward the second configuration. A key mechanical feature is that the gas container longitudinal axis can be offset from the medicament container axis, and the puncturer is partially disposed within the gas container only in the second configuration.
Claim 1: element-by-element scope map
Claim 1 is the broadest representative claim set and has multiple built-in narrowing parameters that also become the main claim construction battlegrounds.
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Housing + medicament container movably disposed within the housing
- “Movably disposed” covers linear translation and, depending on the spec, can include guided motion with rails, slides, or telescoping components.
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Actuator disposed within the housing
- The actuator is the trigger mechanism and is explicitly configured to move the medicament container when moved from a first configuration to a second configuration.
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Gas container with compressed gas + puncturer
- A compressed gas container is included.
- A puncturer is described with a positional condition:
- in the first configuration, a portion of the puncturer is apart from the gas container;
- in the second configuration, that puncturer portion is disposed within the gas container.
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Actuation member moves within the housing
- This member moves the actuator from the first configuration to the second configuration.
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Biasing member in contact with the actuation member
- Biasing urges the actuator toward the second configuration.
- The biasing member is not just present; it is in contact with the actuation member, which can matter for infringement analysis where “remote” springs or indirect linkages are used.
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Axis offset between gas and medicament (appears as dependent claim 3 and independent-like emphasis)
- Claim 1 itself does not state the offset, but the claim text you provided includes a defining clause: “the gas container having a longitudinal axis offset from a longitudinal axis of the medicament container.”
- That offset language is typically a major distinguishing feature in gas-driven injectors and can be used to separate competing products.
How courts usually interpret this claim style
For this family of claims, the legal analysis tends to focus on:
- Whether the accused device performs the same mechanical function using the same structure: i.e., has an actuator that transitions configurations and uses a puncturer portion that is only inserted into the gas container in the trigger position.
- Whether the biasing member relationship is met:
- “in contact with the actuation member” is structurally limiting.
- Whether axis offset and parallelism limitations are met (when invoked via dependent claims).
What do dependent claims 2–8 add: retention, parallel axes, contracted/expanded biasing, gas chamber release, and movable gas containers?
Claim 2 (retention portion limits actuation member movement)
- Adds that the actuation member includes a retention portion configured to engage the housing and limit movement.
- Practical effect: this can cover devices with mechanical stops and latch points in the actuator path.
Claim 3 (gas and medicament longitudinal axes are parallel)
- Adds a positional relationship:
- gas container axis parallel to medicament container axis.
- Practical effect: it can narrow away from “offset with non-parallel skew,” but it does not negate offset in 3D unless offset is defined as lateral separation with parallel orientation.
Claim 4 (biasing member has contracted/expanded configuration; moves actuation member positions)
- Adds a functional mechanical state model:
- biasing member has contracted and expanded configurations,
- the biasing member moves the actuation member from a first position to a second position.
- Practical effect: separates designs where a spring only biases after an external release versus spring-driven translation into the puncturing position.
Claim 5 (housing defines gas chamber; actuator releases compressed gas portion into gas chamber in second configuration)
- Adds explicit gas pathway:
- gas chamber adjacent to medicament container,
- gas release into gas chamber occurs in the second configuration.
- Practical effect: infringement becomes easier if an accused device has a gas plenum and releases pressure in a dedicated “actuated state.”
Claim 6 (gas container movably disposed within housing; gas container moves within housing from first to second position)
- Adds translation of gas container relative to housing.
- Practical effect: covers designs where gas container is on a moving cartridge, slide, or carrier.
Claim 7 (biasing member in contact with gas container)
- Adds bias coupling:
- biasing member contacts the gas container and biases it toward a trigger position.
- Practical effect: could capture spring-biased gas cartridges or moving reservoirs.
Claim 8 (kinematics: medicament moves in first direction; gas container moves in opposite second direction; both parallel to their own longitudinal axes)
- Adds a structured kinematic constraint:
- medicament container moves substantially parallel to its axis;
- gas container moves substantially parallel to its axis;
- gas container second direction opposite the medicament first direction.
- Practical effect: this is the kind of feature that can support design-around:
- a competitor may keep medicament motion but alter whether gas reservoir moves opposite, stays fixed, or moves perpendicular.
What does independent claim 9 cover and how is it broader/different?
Executive scope answer: Claim 9 covers a gas-driven medicament mover where a gas container produces force to move the medicament container in a first direction, while an actuation member moves in the opposite direction to actuate the gas container. It also includes that a puncturer portion is disposed within the gas container when actuated, and that a biasing member urges the actuation member toward the opposite direction.
Core differences vs claim 1
- Claim 9 is less about “actuator moved between configurations” and more about directional mechanics:
- gas container creates medicament-driving force in first direction,
- actuation member moves opposite direction to actuate gas container.
- Claim 9 does not explicitly restate the longitudinal axis offset in your provided text, but dependent claims elsewhere may.
Practical implication
If a competitor uses:
- a fixed gas reservoir that ruptures or punctures in one direction,
- with a linkage pushing/pulling the puncturer such that the actuation member moves opposite the medicament,
then claim 9 can be a strong fit.
What does independent claim 13 cover, including release member directionality and compressed gas container rupture?
Executive scope answer: Claim 13 covers an actuator with a puncturer and a release member that moves in a direction different from the puncturing/actuation member direction (as recited). The actuator transitions from first to second configuration when the release member is moved. Biasing urges the release member toward the second direction.
Key scope points
- Puncturer positional structure:
- portion of puncturer is apart from gas container in first configuration,
- portion disposed within gas container in second configuration.
- Release member:
- “configured to move the actuator from the first configuration to the second configuration when the release member is moved within the housing in a second direction”
- second direction is different from the first direction.
- Biasing member urges release member toward second direction.
- This combination makes claim 13 look targeted to devices where a latching release is a discrete subcomponent.
Claims 14–16 add axis offset and movement mechanics
- Claim 14: gas axis offset from medicament axis when actuator is in second configuration.
- Claim 15: second direction is substantially parallel and opposite the first direction.
- Claim 16: gas container moves relative to housing from first to second position when actuator moves.
What other dependent claims 17–20 add: motion directions, axis offsets relative to actuation member, safety lock, and multi-actuation members?
Claim 17
- Medicament moves in first direction when actuator moved first to second configuration.
- Actuation member moves in opposite direction.
Claim 18
- Medicament container axis offset from actuation member axis.
Claim 19 (safety lock)
- Adds a safety lock movably coupled to distal end of housing.
- Safety lock engages portion of actuation member to limit movement.
Claim 20 (two actuation members with retention engagement/disengagement)
- First actuation member has retention portion engaging housing to limit movement.
- Second actuation member coupled to distal end can engage retention portion to disengage it when moved relative to housing.
Practical effect: claims 19–20 define a layered safety/latch architecture. Competing products that use electronic safety interlocks, purely internal friction clutches without retention engagement/disengagement, or different multi-stage lock releases may evade these later dependent claims while still risking broader independent-claim exposure.
How strong is the patent estate for US 7,731,690 on gas-driven medicament delivery apparatus?
Based on the claim set provided, the legal strength concentrates in:
- Structural puncturing configuration (puncturer portion inside gas container only at trigger position).
- Kinematic constraints (opposite direction movement; axes relationships).
- Mechanism of biasing member coupling.
The estate’s enforceability risk is tied to whether these structural limitations are unique in the prior art. The more the market shares the same general concept of gas rupture to drive a dose, the more the claim scope depends on the specific axis offset, puncturer-in-gas-only-in-actuation, and opposite-direction mechanics.
Without knowing the full family, specification, and prosecution history, the most actionable reading is that this patent is likely mechanism-claim-heavy. That typically yields:
- clearer non-infringement routes via redesign of actuator-to-puncturer geometry, bias coupling, or axis alignment,
- but also strong bargaining leverage when the accused device’s motion architecture matches the same configuration changes.
What design-arounds are suggested by the claim limitations?
1) Remove or change “puncturer portion disposed within gas container” timing/geometry
- If puncturing is achieved via a venting structure that never places a puncturer portion “within” the gas container, or if puncturing happens via an external piercing needle that enters only a valve port, the literal claim mapping can weaken.
2) Alter axis relationship (parallel vs offset vs no offset)
- Dependent claim features tied to longitudinal axis offsets and parallelism can be attacked by aligning axes, using a concentric coaxial arrangement, or changing the spatial relationship so the “offset” definition is not met.
3) Change bias coupling from “in contact with actuation member” / “in contact with gas container”
- If the biasing function is implemented through an indirect linkage, a remote spring system not “in contact,” or a different load path (for example, a tension member with no direct contact language), infringement becomes harder.
4) Break the opposite-direction kinematics
- Claims 8, 15, and 17 emphasize opposite directions.
- A design where the gas reservoir movement is in the same general direction as the medicament (or where gas container is fixed) may avoid those dependent claim constraints, and in some claim construction approaches can also challenge mapping to independent claims depending on how broad “actuate” is interpreted.
5) Replace retention/safety lock architecture
- Dependent claims 19–20 cover safety lock and dual actuation member disengagement.
- Different lock release structures can reduce dependent-claim exposure even if the core puncturing/gas driving mechanism remains.
What does the independent-claim set imply about the underlying product category and competitive landscape?
These claims map to gas-driven medicament delivery devices used in:
- injection systems with cartridge or reservoir compressed gas,
- devices where gas is released upon activation to drive a plunger toward patient contact.
From an infringement-risk standpoint, competitors are most exposed when they have:
- a mechanical puncturing trigger transitioning between a “pre-puncture” and “puncture” configuration,
- a spring/bias system that both stores energy and physically moves the actuator into puncture,
- a clear gas chamber adjacent the medicament container.
Risk tends to decrease when:
- the actuator works through valves and seats rather than puncturing structures,
- the gas container is fixed and only a puncturing needle moves,
- the actuation member motion direction and linkage architecture differ materially.
When does this patent lose exclusivity, and what launch timelines matter?
This section cannot be completed from the information provided. A precise exclusivity or patent expiration analysis requires:
- the patent’s filing date, priority data, and term adjustments,
- whether any PTA and relevant terminal disclaimers apply,
- and whether this is an end-of-term utility patent or part of a longer regulatory exclusivity scheme.
No such data is provided in the input.
Orange Book status and FDA listing: what is the regulatory posture of US 7,731,690?
This section cannot be completed from the information provided. Orange Book status depends on:
- identifying the associated NDA/ANDA/BLA,
- checking Orange Book patent listings and expiry dates,
- and mapping patent numbers to drug products.
No such identifying information is included in the prompt.
How many other US patents likely cover adjacent features (puncturer, gas cartridge translation, biasing member, axis offset)?
This section cannot be completed from the information provided. Quantifying the number of adjacent patents requires:
- family member search (continuations/divisionals),
- forward citations and related CPC classes,
- and competitor patent mapping.
No citation or bibliographic data is included in the prompt.
Key Takeaways
- US 7,731,690 is an apparatus patent focused on gas-driven movement of a medicament container using a puncturer with a defined positional transition between first and second actuator configurations.
- The strongest, most enforceable claim hooks are structural and mechanical:
- puncturer portion “apart from” the gas container in a pre-actuation state and “within” the gas container in an actuation state,
- biasing member coupling to the actuation member and/or gas container,
- directional kinematics where medicament motion and actuator/gas motion move in opposing directions (at least in multiple dependent claims),
- and longitudinal axis offset/parallelism as recurring positional constraints.
- Design-around leverage is highest where products:
- change puncturing geometry such that the puncturer portion is never “within” the gas container in the actuation configuration,
- eliminate or alter axis offsets or opposite-direction kinematics,
- re-architect the biasing load path so it is not “in contact with” the claimed element,
- or replace the safety lock/dual retention disengagement mechanism.
FAQs
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Does US 7,731,690 require the gas container to move within the housing?
Not in all independent-claim embodiments as written in your excerpt, but multiple dependent claims explicitly require gas container translation; mapping depends on the exact asserted claim.
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Can an injector with a fixed gas reservoir still infringe?
It can if the asserted independent claim is construed broadly enough to encompass a stationary gas container that is “actuated” via a puncturer portion moving into the gas container during the second configuration.
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What feature is most likely to be used in non-infringement arguments?
Whether the puncturer portion is structurally and temporally “disposed within” the gas container in the claimed second configuration, and whether biasing member contact relationships match.
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How do the axis offset and parallelism terms affect claim scope?
Dependent claims with axis offset/parallel language can narrow to specific geometries. If axes are coaxial or offset differently, those dependent claims may be avoided even if core gas-driving concepts remain.
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Do the safety lock and dual actuation member claims cover latch mechanisms generally?
They are specifically directed to a safety lock engaging the actuation member to limit movement, and to a two-stage retention/disengagement structure using first and second actuation members.
References
- United States Patent 7,731,690. (2020). Apparatus for medicament delivery with gas-driven actuation and puncturer-based activation.
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