Search

CN-121987362-A - Fully-embedded self-driven tissue fluid collecting type expander

CN121987362ACN 121987362 ACN121987362 ACN 121987362ACN-121987362-A

Abstract

The invention discloses a fully-embedded self-driven tissue fluid collecting expander, which comprises an expanding bag, wherein a tissue fluid filtering bag is arranged on the left side of the expanding bag, the tissue fluid filtering bag is of an oblate spheroid structure after being deformed, the bag wall is of a microporous dialysis filter membrane, a liquid inlet at the left end of the expanding bag is communicated with a liquid outlet at the right end of the tissue fluid filtering bag through a liquid guide pipe, a valve control mechanism is arranged in the middle part of the liquid guide pipe, a negative pressure generating mechanism for generating negative pressure in the tissue fluid filtering bag is arranged in the middle part of the liquid guide pipe, and the negative pressure generating mechanism can be a self-expanding extrusion pump or an electric suction pump.

Inventors

  • BIAN CE
  • LIU XUEXIN

Assignees

  • 边策

Dates

Publication Date
20260508
Application Date
20260330

Claims (9)

  1. 1. The fully-embedded self-driven tissue fluid collecting type expander is characterized by comprising an expansion bag (1) and a negative pressure generating mechanism (5), wherein the expansion bag (1) is connected with the negative pressure generating mechanism (5) through a liquid conduit (3), the middle part of the liquid conduit (3) is provided with a valve control mechanism (4) which allows liquid to flow from the negative pressure generating mechanism (5) to the expansion bag (1) in a unidirectional mode under the working state, two ends of the valve control mechanism can be communicated to release pressure under the emergency state, the negative pressure generating mechanism (5) is a self-expanding extrusion pump (6), and the self-expanding extrusion pump (6) comprises a bag wall which plays a role in filtering tissue fluid.
  2. 2. The fully-embedded self-driven tissue fluid collecting expander is characterized in that a tissue fluid filtering bag (2) is arranged on the left side of the expanding bag (1), the tissue fluid filtering bag (2) is of an oblate spheroid or tubular structure after being deformed, the bag wall is of a microporous dialysis filter membrane, and a fluid inlet at the left end of the expanding bag (1) is communicated with a fluid outlet at the right end of the tissue fluid filtering bag (2) through a fluid conduit (3).
  3. 3. The fully-embedded self-driven tissue fluid collection type expander is characterized in that the valve control mechanism (4) comprises a pipeline (41), a fixing seat (42), a through hole (43) and a blocking rod (47), the pipeline (41) is connected in parallel to the middle of the liquid conduit (3), the fixing seat (42) is arranged in the middle of the pipeline (41), the through hole (43) is formed in the fixing seat (42), and the adjustable blocking rod (47) is arranged in the through hole (43).
  4. 4. The self-driven tissue fluid collecting type expander for total implantation according to claim 3, wherein the valve control mechanism (4) further comprises a thread groove (44), a bolt (45) and a magnet (46), the thread groove (44) is formed in the top wall of the through hole (43), the bolt (45) is connected with the thread groove (44) in an internal thread mode, the magnet (46) is arranged on the upper surface of the bolt (45), and the upper end of the blocking rod (47) is fixedly connected with the lower end of the bolt (45).
  5. 5. The fully-embedded self-driven tissue fluid collecting expander is characterized in that the tissue fluid filtering bag (2) is of an oblate spheroid structure after being deformed, the self-expanding extrusion pump (6) comprises a bag body (61), a pump body (62) and a one-way valve (67), the bag body (61) is sleeved on the outer surface of the liquid conduit (3), the bag wall of the bag body (61) is made of a microporous dialysis filter membrane, the pump body (62) is arranged on the bottom wall of the bag body (61), the pump body (62) is connected in series with the middle of the liquid conduit (3), the one-way valves (67) are connected in series with the left side and the right side of the liquid conduit (3), and the one-way valves (67) are respectively positioned on the left side and the right side of the bag body (61).
  6. 6. The fully-embedded self-driven tissue fluid collection type expander disclosed in claim 5, wherein the self-expanding extrusion pump (6) further comprises a fixing rod (63), a piston (64), an elastic body (65) and a sealing rubber sleeve (66), the fixing rod (63) is arranged on the top wall of the capsule body (61), the piston (64) is arranged at the lower end of the fixing rod (63), the piston (64) is slidably connected inside the pump body (62), the elastic body (65) is arranged inside the pump body (62), the elastic body (65) is located between the lower surface of the piston (64) and the bottom wall of the pump body (62), the sealing rubber sleeve (66) is arranged inside the capsule body (61), and the sealing rubber sleeve (66) wraps the outer surface of the piston (64) and the upper surface of the piston (64) and the outer surface of the fixing rod (63).
  7. 7. The fully-embedded self-driven tissue fluid collection type expander is characterized in that the tissue fluid filtering bag (2) is of a tubular structure after being deformed, the self-expanding extrusion pump (6) can be replaced by an electric suction pump (7), the electric suction pump (7) comprises a protective shell (71) and a micro peristaltic pump (72), the protective shell (71) is sleeved on the outer surface of the liquid conduit (3), the micro peristaltic pump (72) is arranged in the middle of the liquid conduit (3), and the micro peristaltic pump (72) is located inside the protective shell (71).
  8. 8. The fully-embedded self-driven tissue fluid collection type expander is characterized in that the electric suction pump (7) further comprises a power module (73), a control board (74) and a wireless remote control transceiver (75), the bottom wall of the protective shell (71) is provided with the power module (73), the control board (74) and the wireless remote control transceiver (75), the input end of the control board (74) is electrically connected with the output end of the power module (73), the input end of the micro peristaltic pump (72) is electrically connected with the output end of the control board (74), and the control board (74) is in bidirectional electrical connection with the wireless remote control transceiver (75).
  9. 9. The application method of the fully-embedded self-driven tissue fluid collection type expander is characterized by comprising the following steps of: S1, implanting the self-driven tissue fluid collecting type expander into the skin; S2, actively recovering the shape of the tissue fluid filtering bag (2) which is compressed and deformed, expanding subcutaneous tissues and collecting filtered tissue fluid; s3, if a self-expanding extrusion pump (6) is adopted, the pump body is pressed periodically, liquid collected by the tissue fluid filtering bag (2) is pumped into the expanding bag (1), negative pressure is manufactured for the tissue fluid filtering bag (2), and the tissue fluid filtering bag (2) is compressed and deformed again; If an electric suction pump (7) is adopted, suction is started through remote control or automatic program, tissue liquid in the suction tissue liquid filtering bag (2) is pumped into the expansion bag (1), negative pressure is manufactured for the tissue liquid filtering bag (2), and the tissue liquid filtering bag (2) is compressed and deformed again; S4, adjusting the expansion speed by controlling the pressing frequency or the working period of the electric pump; And S5, after the expansion is completed, the self-driven tissue fluid collecting expander is taken out through the operation.

Description

Fully-embedded self-driven tissue fluid collecting type expander Technical Field The invention relates to the technical field of medical instruments, in particular to a fully-embedded self-driven tissue fluid collecting expander. Background Skin dilation is a common method of burn/plastic surgery/orthopedic repair of skin defects. The traditional skin dilator needs to be injected with normal saline through regular percutaneous puncture, the process is painful, the infection risk exists, the patient is inconvenient to go to the hospital, and the problems such as cost are caused; Liquids are good media for skin distension, but liquids need to rely on external infusion; In the prior art, an automatic expansion scheme adopting gas as a medium exists, but the gas is compressible, the expansion force which can be provided is lower than that of liquid, the mechanical support which is provided in the expansion process is difficult to control, and the defects of complex structure, dependence on external energy, leakage or fault risk and the like exist. For example, some schemes adopt chemical reaction gas production, external gas cylinders or electric pumps, and external intervention is still required or reliability problems of in-vivo implanted electronic elements exist; Therefore, there is a need for a skin expansion system that can be fully implanted without external injection of fluids, is simple in structure, safe and reliable, and provides controlled expansion without pain. Disclosure of Invention The invention aims to overcome the existing defects, and provides the fully-embedded self-driven tissue fluid collecting expander, which is used for collecting filtered tissue fluid through the built-in semi-permeable negative pressure generating mechanism and controllably pumping the tissue fluid into the expansion bag through the valve control mechanism, so that the safe expansion which does not need external puncture water injection, does not depend on external energy, can be controlled in expansion speed and can quickly release pressure in an emergency state is realized, and the problems in the background technology can be effectively solved. The self-driven tissue fluid collecting expander comprises an expansion bag and a negative pressure generating mechanism, wherein the expansion bag is connected with the negative pressure generating mechanism through a liquid conduit, the middle part of the liquid conduit is provided with a valve control mechanism which allows liquid to flow from the negative pressure generating mechanism to the expansion bag in one direction in a working state, the valve control mechanism can be communicated with the two ends to release pressure in an emergency state, the negative pressure generating mechanism is a self-expanding extrusion pump, and the self-expanding extrusion pump comprises a bag wall which plays a role in filtering tissue fluid. The self-expanding extrusion pump with the filtering wall collects the filtering tissue fluid and pumps the filtering tissue fluid into the expanding bag controllably through the valve control mechanism, so that safe expansion which does not need external puncture water injection, does not depend on external energy, is controllable in expansion speed and can quickly release pressure in an emergency state is realized. Further, a tissue fluid filtering bag is arranged on the left side of the expansion bag, the tissue fluid filtering bag is of an oblate spheroid or tubular structure after being deformed, the bag wall is of a microporous dialysis filter membrane, a liquid inlet at the left end of the expansion bag is communicated with a liquid outlet at the right end of the tissue fluid filtering bag through a liquid conduit, and an independent tissue fluid filtering bag is arranged to make up for the defect of the bag wall filtering amount of the self-expansion extrusion pump. Further, the valve control mechanism comprises a pipeline, a fixing seat, a through hole and a plugging rod, the middle part of the liquid conduit is connected with the pipeline in parallel, the fixing seat is arranged at the middle part of the pipeline, the through hole is formed in the fixing seat, the plugging rod is arranged in the through hole, and the expanding bag and the interstitial fluid filtering bag can be communicated to release pressure in an emergency state. Further, the valve control mechanism further comprises a thread groove, a bolt and a magnet, the thread groove is formed in the top wall of the through hole, the bolt is connected with the inner thread of the thread groove, the magnet is arranged on the upper surface of the bolt, the upper end of the plugging rod is fixedly connected with the lower end of the bolt, and the on-off of the pipeline is controlled through magnetic control conveniently. Further, the tissue fluid filtering bag is of an oblate spheroid structure after deformation, the self-expanding extrusion pump comprises a bag body, a pump body a