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US 2026/0165733 A1Published application
Integrated device and system for epidural injection
AssigneeBejing Sightnovo Medical Technology Co., Ltd
InventorsChaoran XIA, Chan ZHAO, Chuan LI
Life of this patent
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Abstract
A medical puncturing device and a system. The medical puncturing device includes a syringe barrel (1), a gasket seal (3), a push shaft (2), an elastic element (12) and a catheter (16). The medical puncturing device enables injection, access, expansion, and/or device implantation in an apparent or potential tissue void, cavity, or vessel (e.g., an epidural space), and is especially useful for achieving precise control of puncturing depth and needle placement, as well as steady injection and injection of a defined volume (e.g., for epidural anesthesia).
Claims35
A device, comprising:
- a) a syringe barrel extending from a proximal end to a distal end, wherein the distal end of the syringe barrel comprises a needle base configured to be coupled to a needle comprising a needle lumen, and wherein the needle base comprises a passageway configured to fluidically communicate with the needle lumen;
- b) a gasket seal that forms a fluid-tight seal with an inner wall of the syringe barrel, wherein a flowable composition lumen is formed between the gasket seal and the distal end of the syringe barrel, wherein the gasket seal comprises a through hole, and wherein the through hole is configured to align with the passageway in the needle base;
- c) a push shaft extending from a proximal end to a distal end, wherein the distal end of the push shaft engages the gasket seal, and the push shaft comprises:
- a central channel comprising a distal end that aligns with the through hole of the gasket seal;
- and
- a valve that aligns with a proximal end of the central channel;
- d) an elastic element configured to actuate the push shaft such that the gasket seal is moved distally along the axis of the syringe barrel;
- and
- e) a catheter configured to be inserted through the valve and into the central channel.
6 more elements
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5-7. (canceled)
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28-39. (canceled)
A device, comprising:
- a) a syringe barrel extending from a proximal end to a distal end, wherein the distal end of the syringe barrel comprises a needle base coupled to a needle comprising a needle lumen, and wherein the needle base comprises a passageway fluidically communicating with the needle lumen;
- b) a gasket seal that forms a fluid-tight seal with an inner wall of the syringe barrel, wherein the gasket seal abuts the distal end of the syringe barrel, wherein the gasket seal comprises a through hole, and wherein the through hole aligns with the passageway in the needle base;
- c) a push shaft extending from a proximal end to a distal end, wherein the distal end of the push shaft engages the gasket seal, and the push shaft comprises:
- a central channel comprising a distal end that aligns with the through hole of the gasket seal;
- and
- a valve that aligns with a proximal end of the central channel;
- d) a spring, wherein a distal end of the spring engages a portion of the push shaft, and a proximal end of the spring engages a structure (e.g., a baffle) in or of the syringe barrel, wherein the spring is configured to be compressed, and decompression of the compressed spring actuates the push shaft or the gasket seal such that the gasket seal is moved distally along the axis of the syringe barrel;
- e) a catheter configured to be inserted through the valve and into the central channel, and
- f) a housing accommodating at least a portion of the syringe barrel, at least a portion of the push shaft, and at least a portion of the catheter.
6 more elements
A device, comprising:
- a) a syringe barrel extending from a proximal end to a distal end, wherein the distal end of the syringe barrel comprises a needle base coupled to a needle comprising a needle lumen, and wherein the needle base comprises a passageway fluidically communicating with the needle lumen;
- b) a gasket seal that forms a fluid-tight seal with an inner wall of the syringe barrel, wherein a flowable composition lumen is formed between the gasket seal and the distal end of the syringe barrel, wherein the gasket seal comprises a through hole, and wherein the through hole aligns with the passageway in the needle base;
- c) a push shaft extending from a proximal end to a distal end, wherein the distal end of the push shaft engages the gasket seal, and the push shaft comprises:
- a central channel comprising a distal end that aligns with the through hole of the gasket seal;
- and
- a valve that aligns with a proximal end of the central channel;
- d) a spring, wherein a distal end of the spring engages a portion of the push shaft, and a proximal end of the spring engages a structure (e.g., a baffle) in or of the syringe barrel, wherein the spring is compressed, and decompression of the compressed spring actuates the push shaft or the gasket seal such that the gasket seal is moved distally along the axis of the syringe barrel;
- e) a catheter configured to be inserted through the valve and into the central channel, and
- f) a housing accommodating at least a portion of the syringe barrel, at least a portion of the push shaft, and at least a portion of the catheter.
6 more elements
(canceled)
(canceled)
A device, comprising:
- a) a syringe barrel extending from a proximal end to a distal end, wherein the distal end of the syringe barrel comprises a needle base coupled to a needle comprising a needle lumen, and wherein the needle base comprises a passageway fluidically communicating with the needle lumen;
- b) a gasket seal that forms a fluid-tight seal with an inner wall of the syringe barrel, wherein the gasket seal comprises a through hole, and wherein the through hole aligns with the passageway in the needle base;
- c) a push shaft extending from a proximal end to a distal end, wherein the distal end of the push shaft engages the gasket seal, and the push shaft comprises:
- a central channel comprising a distal end that aligns with the through hole of the gasket seal;
- and
- a valve that aligns with a proximal end of the central channel;
- d) a spring, wherein a distal end of the spring engages a portion of the push shaft, and a proximal end of the spring engages a structure (e.g., a baffle) in or of the syringe barrel, wherein the spring exerts a force on the push shaft or the gasket seal such that the gasket seal abuts the distal end of the syringe barrel, and wherein the central channel and the passageway in the needle base are configured to be connected;
- e) a catheter configured to be inserted through the valve and into the central channel, and
- f) a housing accommodating at least a portion of the syringe barrel, at least a portion of the push shaft, and at least a portion of the catheter.
6 more elements
A device, comprising:
- a) a syringe barrel extending from a proximal end to a distal end, wherein the distal end of the syringe barrel comprises a needle base coupled to a needle comprising a needle lumen, and wherein the needle base comprises a passageway fluidically communicating with the needle lumen;
- b) a gasket seal that forms a fluid-tight seal with an inner wall of the syringe barrel, wherein the gasket seal comprises a through hole, and wherein the through hole aligns with the passageway in the needle base;
- c) a push shaft extending from a proximal end to a distal end, wherein the distal end of the push shaft engages the gasket seal, and the push shaft comprises:
- a central channel comprising a distal end that aligns with the through hole of the gasket seal;
- a valve that aligns with a proximal end of the central channel;
- and
- a catheter guiding channel, wherein the valve aligns with a distal end of the catheter guiding channel;
- d) a spring, wherein a distal end of the spring engages a portion of the push shaft, and a proximal end of the spring engages a structure (e.g., a baffle) in or of the syringe barrel, wherein the spring exerts a force on the push shaft or gasket seal such that the gasket seal abuts the distal end of the syringe barrel, and wherein the central channel and the passageway in the needle base are connected;
- e) a catheter, wherein a portion of the catheter is in the catheter guiding channel;
- and
- f) a housing accommodating at least a portion of the syringe barrel, at least a portion of the push shaft, and at least a portion of the catheter.
8 more elements
46-50. (canceled)
A method for accessing an epidural space of a subject, comprising:
- a) coupling a needle to a device, wherein the needle comprises a needle tip, a needle lumen, and a needle hub, and the device comprises:
- i) a syringe barrel extending from a proximal end to a distal end, wherein the distal end of the syringe barrel comprises a needle base configured to be coupled to the needle, and wherein the needle base comprises a passageway configured to fluidically communicate with the needle lumen;
- ii) a gasket seal that forms a fluid-tight seal with an inner wall of the syringe barrel, wherein the gasket seal abuts the distal end of the syringe barrel, wherein the gasket seal comprises a through hole along an axis of the syringe barrel, and wherein the through hole aligns with the passageway in the needle base;
- iii) a push shaft extending from a proximal end to a distal end, wherein the distal end of the push shaft engages the gasket seal, and the push shaft comprises:
- a central channel comprising a distal end that aligns with the through hole of the gasket seal;
- and
- a valve that aligns with a proximal end of the central channel;
- iv) a spring, wherein a distal end of the spring engages a portion of the push shaft, and a proximal end of the spring engages a structure (e.g., a baffle) in or of the syringe barrel, wherein the spring is configured to be compressed;
- and
- v) a catheter configured to be inserted through the valve and into the central channel;
- and
- b) proximally actuating the push shaft, thereby compressing the spring and forming a flowable composition lumen between the gasket seal and the distal end of the syringe barrel, wherein the flowable composition lumen contains a gas.
9 more elements
52-60. (canceled)
Dependencies are inferred from the claim text.