Medical penetration device and system
A medical puncturing device and a system comprising medical apparatuses configured to be assembled into the medical puncturing device. The device or system comprises: a syringe barrel ( 1 ) comprising a distal closed end and a proximal open end; an elastic movement unit comprising an actuation member ( 2 ) and a floating seal ( 3 ) inside the syringe barrel ( 1 ), where the actuation member ( 2 ) and a floating seal ( 3 ) are capable of forming an elastic connection such that the actuation member ( 2 ) and floating seal ( 3 ) are capable of moving forward and backward relative to one another; a hollow puncture needle ( 6 ) fixedly connected to the actuation member ( 2 ) and proximal to the floating seal ( 3 ), where the hollow puncture needle ( 6 ) comprises a needle distal opening ( 6 a ) and a needle body opening ( 6 b ); and a flowable composition lumen ( 7 ) enclosed by the syringe barrel distal closed end, an inner wall of the syringe barrel, and the floating seal ( 3 ). The device or system is configured to advance the hollow puncture needle ( 6 ) distally. Prior to use, the needle distal opening ( 6 a ) can be proximal to the floating seal ( 3 ), within the floating seal ( 3 ), between the floating seal ( 3 ) and a distal seal ( 8 ) at the syringe barrel distal closed end, within the distal seal ( 8 ), or distal to the distal seal ( 8 ). The hollow puncture needle ( 6 ) is advanced through the floating seal ( 3 ) and the syringe barrel distal closed end, thereby connecting the flowable composition lumen ( 7 ), the needle body opening ( 6 b ), and the needle distal opening ( 6 a ). The present disclosure enables injection, access, expansion, and/or device implantation in an apparent or potential tissue void, cavity, or vessel, 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.
1. A device, comprising:
a syringe barrel comprising a proximal open end and a distal closed end;
an actuation unit in the syringe barrel, wherein the actuation unit comprises a needle base, a floating seal, and an energy storage member between the needle base and the floating seal, and wherein the needle base is proximal to the floating seal;
a needle comprising a needle proximal end engaging the needle base and a needle distal end, wherein the needle comprises:
(i) a needle distal opening,
(ii) a needle body opening between the needle proximal end and the needle distal end, wherein the needle body opening is proximal to the needle distal opening, and
(iii) a needle body passageway connecting the needle distal opening and the needle body opening; and
a flowable composition lumen distal to the floating seal,
wherein the actuation unit is configured to advance the needle to place the needle proximal end and/or the needle distal end in the flowable composition lumen.
2. The device of claim 1 , wherein the flowable composition lumen comprises a flowable composition selected from the group consisting of a liquid, a solution, a suspension, a gel, an oil, an ointment, an emulsion, a cream, a foam, a lotion, a paste, and any combination thereof.
3. The device of claim 1 , wherein the flowable composition lumen does not comprise a gas.
4. The device of claim 1 , wherein the syringe barrel does not contain a flowable composition between the floating seal and the needle base, wherein the flowable composition is selected from the group consisting of: a liquid, a solution, a suspension, a gel, an oil, an ointment, an emulsion, a cream, a foam, a lotion, a paste, and any combination thereof.
5. The device of claim 1 , wherein the syringe barrel is filled with a gas between the floating seal and the needle base.
6. The device of claim 1 , wherein the needle base engages an actuation member on the proximal open end of the syringe barrel, wherein the actuation member is configured to advance the needle base and the needle distally.
7. The device of claim 1 ,
wherein the energy storage member is a first energy storage member, the actuation unit further comprises a second energy storage member elastically engaging a slider and the floating seal, and a portion of the slider extends outside the syringe barrel.
8. The device of claim 7 , wherein the energy storage member comprises a spring and/or an elastic sheath.
9. The device of claim 7 , wherein the energy storage member is releasably connected to the needle base and/or the floating seal.
10. The device of claim 7 , wherein the energy storage member is configured to exert a force on the floating seal which in turn exerts a force on a flowable composition in the flowable composition lumen.
11. The device of claim 1 , comprising a sheath configured to enclose all or a portion of the needle.
12. The device of claim 1 , comprising a stopper in the flowable composition lumen, wherein the stopper is configured to stop the floating seal from moving distally.
13. The device of claim 1 , comprising a distal seal at the distal closed end of the syringe barrel.
14. The device of claim 1 , comprising a contacting element at the distal closed end of the syringe barrel.
15. The device of claim 1 , comprising a guiding structure configured to guide a linear member toward, into and/or through the needle.
16. The device of claim 15 , wherein the guiding structure comprises an angled guiding groove on the floating seal and the angled guiding groove extends from a proximal surface of the floating seal to a distal surface of the floating seal.
17. The device of claim 15 , wherein the device further comprises the linear member selected from the group consisting of: a guidewire, a sheath, a catheter, a cannula, a microneedle, an electrode, and a sensor.