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CN-121971121-A - Tumor minimally invasive biopsy sampler with adjustable puncture depth

CN121971121ACN 121971121 ACN121971121 ACN 121971121ACN-121971121-A

Abstract

The invention relates to the technical field of medical instruments and discloses a tumor minimally invasive biopsy sampler with adjustable puncture depth, which comprises a shell, wherein a piston rod is movably inserted at the upper part of the shell, a round rod is movably inserted at the bottom of the shell, a force storage component is arranged at the upper part of the inner wall of the shell, a release component is arranged at the middle part of the inner wall of the shell, a rotating component is arranged at the lower part of the shell, an adjusting component is arranged at the bottom of the shell, the force storage component comprises a center rod which is rotatably connected to the inner wall of the shell, a clockwork spring is sleeved on the outer surface of the center rod, a gear is fixedly connected at the middle part of the outer surface of the center rod, and a rack is embedded at the outer surface of the piston rod. According to the invention, the piston rod is pulled to cooperate with the rack and pinion transmission to realize the accumulation, the wedge block is utilized to block, then the push rod is pressed to drive the swing rod to rotate to realize the movement of the wedge block, the accumulation is released, the sampling needle is pushed to move to realize sampling, the stabile and controllable puncture power is ensured, and in addition, the puncture depth can be adjusted through the adjusting component.

Inventors

  • ZHANG JUAN

Assignees

  • 南京市第一医院

Dates

Publication Date
20260505
Application Date
20260114

Claims (10)

  1. 1. The tumor minimally invasive biopsy sampler with the adjustable puncture depth is characterized by comprising a shell (1), wherein a piston rod (2) is movably inserted at the upper part of the shell (1), a round rod (4) is movably inserted at the bottom of the shell (1), a force storage component (6) is arranged at the upper part of the inner wall of the shell (1), a release component (7) is arranged in the middle of the inner wall of the shell (1), a rotating component (8) is arranged at the lower part of the shell (1), and an adjusting component (9) is arranged at the bottom of the shell (1); the power storage assembly (6) comprises a center rod (62) rotatably connected to the inner wall of the shell (1), a clockwork spring (64) is sleeved on the outer surface of the center rod (62), a gear (63) is fixedly connected to the middle part of the outer surface of the center rod (62), and a rack (61) is embedded in the outer surface of the piston rod (2); The rotary assembly (8) comprises a base (81) arranged on the inner wall of the bottom of the shell (1), a vertical plate (82) is fixedly connected to the upper surface of the base (81), a guide rod (83) is inserted in the middle of the vertical plate (82), and a double-rail guide groove (84) is formed in the outer surface of the round rod (4).
  2. 2. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 1, wherein two sides of the inner wall of the shell (1) are fixedly connected with a hollow cylinder (65), one end, far away from the inner wall of the shell (1), of the hollow cylinder (65) is movably inserted with an inner rod (66), one end, far away from the hollow cylinder (65), of the inner rod (66) is fixedly connected with a wedge block (67), a first spring (68) is arranged in the hollow cylinder (65), and one end, far away from the hollow inner wall, of the first spring (68) is fixedly connected with the end of the inner rod (66).
  3. 3. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 2, wherein the release assembly (7) comprises a push rod (71) movably penetrating through the outer surface of the shell (1), one end of the push rod (71) extending into the shell (1) is fixedly connected with a clamping seat (72), and the outer surface of the inner rod (66) is fixedly connected with a sliding rod (75).
  4. 4. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 3, wherein the inner wall of the shell (1) is fixedly connected with a shaft lever (73), a swing rod (74) is movably sleeved on the outer surface of the shaft lever (73), a strip-shaped groove (76) is formed in the outer surface of the swing rod (74) in a penetrating mode, and the clamping seat (72) is slidably clamped with the two ends of the sliding rod (75) on the inner wall of the strip-shaped groove (76).
  5. 5. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 1, wherein a friction rod (85) is fixedly connected to the upper surface of the base (81), an arc-shaped cover (86) is movably sleeved on the outer surface of the friction rod (85), and the arc-shaped cover (86) is located right above the vertical plate (82).
  6. 6. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 5, wherein a friction ring (87) is slidably connected to the outer surface of the guide rod (83), the top end of the friction ring (87) is fixedly connected to the lower surface of the arc-shaped cover (86), a second spring (88) is arranged on the lower surface of the friction ring (87), and the bottom end of the second spring (88) is fixedly connected to the upper surface of the base (81).
  7. 7. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 1, wherein two groups of vertical plates (82) and guide rods (83) are symmetrically arranged on two sides of the round rod (4), the double-rail guide grooves (84) are arranged in a same-direction rotation mode, and the guide rods (83) are slidably clamped in the double-rail guide grooves (84).
  8. 8. The tumor minimally invasive biopsy sampler with adjustable penetration depth according to claim 1, wherein the adjusting assembly (9) comprises a threaded ring (91) fixedly connected to the bottom of the casing (1), and a hollow threaded tube (92) is connected to the internal threads of the threaded ring (91).
  9. 9. The tumor minimally invasive biopsy sampler with adjustable penetration depth of claim 8, wherein the top end of the hollow threaded tube (92) is fixedly connected to the lower surface of the base (81).
  10. 10. The tumor minimally invasive biopsy sampler with adjustable puncture depth according to claim 1, wherein a sheet plate (3) is fixedly connected to the bottom end of the piston rod (2), the top end of the round rod (4) is fixedly connected to the lower surface of the sheet plate (3), a sampling needle (5) is fixedly connected to the bottom end of the round rod (4), and a handle (10) is arranged on the outer surface of the shell (1).

Description

Tumor minimally invasive biopsy sampler with adjustable puncture depth Technical Field The invention relates to the technical field of medical appliances, in particular to a tumor minimally invasive biopsy sampler with adjustable puncture depth. Background Along with the development of personalized medical treatment and minimally invasive technology, the requirements on diagnosis and treatment tools with small wounds, accurate sampling and convenient operation are urgent, the minimally invasive tumor surgery utilizes the minimally invasive concept and combines image guidance and precise instrument design to realize accurate positioning and minimally invasive operation of a focus, and the minimally invasive biopsy sampler is a key minimally invasive medical instrument for pathological diagnosis of tumors, can accurately penetrate into the focus of the tumors, can complete tissue cutting and cutting through the cooperation of a cutting knife, is complete in sampling, is easy to sterilize, can be used once, and can reduce cross contamination. Among the prior art, chinese patent literature with bulletin number CN215739135U proposes a minimally invasive tumor biopsy sampler, including sheath pole, shearing portion, elastic part, shearing blade, spacing groove, rotating sleeve, thin screw rod, perforation, rotate sleeve screw thread suit on thin screw rod, and it is when rotating on the sheath pole, drive thin screw rod moves along the axial of sheath pole to pulling two elastic part slides in the spacing groove, and then makes two shearing blades are close to each other, accomplishes the shearing action, through rotating the rotating sleeve, makes thin screw rod pulling elastic part slide in the spacing groove, and then makes shearing blades on two elastic parts be close to each other to cut tumor tissue, the simple operation, and elastic part can not produce the self-moving, and then can not influence the operation of biopsy sampling, through setting up the rubber slab for the puncture degree of sheath pole can be adjusted, avoid the puncture degree of depth too big and cause the tumor tissue to produce the damage. The inventor considers that the prior art has the defects that the prior art sampler adopts an elastic release mode to sample when sampling is carried out, but the puncture depth of each stretch release is fixed, the puncture depth is inconvenient to adjust according to specific situation demands, meanwhile, the elastic release puncture mainly depends on the stretching length of a spring, the unavoidable force of a stretching piston rod during puncture is easy to cause the condition of hand shake, the piston rod needs to be controlled to be in a stretching state, the operation is relatively inconvenient, and in addition, the single elastic release sampling is not sufficiently crisp. Disclosure of Invention The invention aims to solve the technical problems that the prior sampler has the defects of inconvenient adjustment of the elastic puncture depth and inconvenient operation of a stretching piston rod, and therefore, the invention provides a tumor minimally invasive biopsy sampler with adjustable puncture depth. In order to achieve the purpose, the tumor minimally invasive biopsy sampler with the adjustable puncture depth comprises a shell, wherein a piston rod is movably inserted into the upper part of the shell, a round rod is movably inserted into the bottom of the shell, a force storage component is arranged on the upper part of the inner wall of the shell, a release component is arranged in the middle of the inner wall of the shell, a rotating component is arranged on the lower part of the shell, and an adjusting component is arranged at the bottom of the shell; The power storage assembly comprises a central rod rotatably connected to the inner wall of the shell, a clockwork spring is sleeved on the outer surface of the central rod, a gear is fixedly connected to the middle part of the outer surface of the central rod, and a rack is embedded in the outer surface of the piston rod; the rotary assembly comprises a base arranged on the inner wall of the bottom of the shell, a vertical plate is fixedly connected to the upper surface of the base, a guide rod is inserted in the middle of the vertical plate, and a double-rail guide groove is formed in the outer surface of the round rod. Preferably, the hollow cylinder is fixedly connected with two sides of the inner wall of the shell, one end of the hollow cylinder, far away from the inner wall of the shell, is movably inserted with the inner rod, one end of the inner rod, far away from the hollow cylinder, is fixedly connected with the wedge block, a first spring is arranged in the hollow cylinder, and one end, far away from the hollow inner wall, of the first spring is fixedly connected with the end part of the inner rod. Preferably, the release assembly comprises a push rod movably inserted into the outer surface of the shell, one end of the push