Puncture extraction equipment

Abstract

The utility model relates to the technical field of puncture extraction equipment, in particular to puncture extraction equipment which comprises an outer sleeve, an outer needle tube is connected to the front end of the outer sleeve, an opening is formed in the rear end of the outer sleeve, an inner sleeve is arranged in the outer sleeve in a front-back moving mode, an inner needle tube is connected to the front end of the inner sleeve, and an opening is formed in the rear end of the inner sleeve. The front end of the inner needle tube is movably arranged in the outer needle tube back and forth, a piston is arranged in the inner needle tube, the rear side of the piston is connected with a push rod, and the rear end of the push rod is arranged behind the outer sleeve; a long-strip-shaped hole penetrating through the inside and the outside is formed in the outer sleeve in the front-back direction, a push handle is installed on the outer wall of the inner sleeve, and the end, away from the inner sleeve, of the push handle penetrates through the long-strip-shaped hole to be arranged on the outer side of the outer sleeve. The problem that in the prior art, after the outer wall of a needle tube of a puncture needle makes contact with cancer cells, the cancer cells are driven to make contact with healthy cells in the needle pulling process, and therefore the risk of cancer cell diffusion exists is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to puncture extraction equipment technical field, specifically related to a puncture extraction equipment. BACKGROUND

[0002] In many fields such as cell biology, medical research, clinical diagnosis and treatment, cell extraction is a crucial basic operation. Precise, efficient and minimally invasive extraction methods and equipment have been the goal pursued by researchers and medical workers.

[0003] Puncture extraction, as a common means of obtaining cells, has a wide range of applications in practice. However, current puncture extraction technology still faces a series of severe challenges.

[0004] In the prior art, the puncture needle of the puncture extraction equipment mostly adopts a single needle tube design scheme, for example, the Chinese utility model with application number CN202320182460.5 discloses a breast tumor puncture biopsy device.

[0005] However, using a single needle tube design scheme when extracting cancer cells has some problems, such as when extracting cancer cells, the outer wall of the needle tube will contact the cancer cells during the needle extraction process, which will cause the cancer cells to come into contact with healthy cells, thereby increasing the risk of cancer cell spread. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a puncture extraction equipment, which solves the problem in the prior art that the outer wall of the needle tube of the puncture needle will contact the cancer cells during the needle extraction process, which will cause the cancer cells to come into contact with healthy cells, thereby increasing the risk of cancer cell spread.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A puncture extraction equipment, comprising an outer sleeve tube, a front end of the outer sleeve tube being connected with an outer needle tube, a rear end of the outer sleeve tube being provided as an opening, an inner sleeve tube being movably arranged in the outer sleeve tube, a front end of the inner sleeve tube being connected with an inner needle tube, a rear end of the inner sleeve tube being provided as an opening, the front end of the inner needle tube being movably arranged in the outer needle tube, a piston being arranged in the inner needle tube, a rear side of the piston being connected with a push rod, the rear end of the push rod being arranged at the rear of the outer sleeve tube; the outer sleeve tube being provided with a long hole penetrating the inner and outer parts in the front-rear direction, a push handle being installed on the outer wall of the inner sleeve tube, one end of the push handle away from the inner sleeve tube being arranged outside the outer sleeve tube through the long hole.

[0009] A further technical scheme is that an installation tube is sleeved on the outer wall of the inner sleeve tube, the inner sleeve tube is provided with a first thread, the inner wall of the installation tube is provided with a second thread matched with the first thread, and the push handle is installed on the outer wall of the installation tube.

[0010] Further, the outer wall of the mounting pipe is concavely provided with a threaded hole, the push handle is provided with a through hole penetrating through two ends, and the threaded hole and the through hole are aligned, a bolt is inserted into the through hole and is connected to the threaded hole in a threaded mode.

[0011] Further, the outer wall of the mounting pipe is concavely provided with a threaded hole, the push handle is provided with a through hole penetrating through two ends, and the threaded hole and the through hole are aligned, a bolt is inserted into the through hole and is connected to the threaded hole in a threaded mode.

[0012] Further, the outer wall of the mounting pipe is concavely provided with a threaded hole, the push handle is provided with a through hole penetrating through two ends, and the threaded hole and the through hole are aligned, a bolt is inserted into the through hole and is connected to the threaded hole in a threaded mode.

[0013] Further, the outer wall of the mounting pipe is concavely provided with a threaded hole, the push handle is provided with a through hole penetrating through two ends, and the threaded hole and the through hole are aligned, a bolt is inserted into the through hole and is connected to the threaded hole in a threaded mode.

[0014] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1, when extracting, first hold the sleeve pipe, insert the outer needle tube into the puncture part, and move the tip of the outer needle tube to the lesion area under the cooperation of the ultrasonic equipment, then drive the inner sleeve pipe to move in the outer sleeve pipe by pushing the handle forward, and the inner needle tube is pulled out from the front end of the outer needle tube and is inserted into the lesion area, then the piston is moved back by pulling the push rod back to extract part of the lesion area into the inner needle tube, after extraction, push the handle back to make the inner needle tube retract into the outer needle tube, then pull out the outer needle tube, only the inner needle tube contacts the lesion area in the whole process, the outer needle tube does not contact the lesion area, and the outer needle tube isolates the inner needle tube when pulling out the needle, so that the inner needle tube is not polluted in the healthy area; 2, the handle can not only drive the inner needle tube to pull out and retract, but also control the inner needle tube to remain in the outer needle tube during pulling out the needle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole schematic view of the puncture extraction equipment.

[0016] Figure 2 It is a sectional schematic view of the puncture extraction equipment.

[0017] Figure 3 It is Figure 2 It is a local enlarged schematic view of the mark A.

[0018] Icon: 1-outer sleeve, 2-outer needle tube, 3-inner sleeve, 4-inner needle tube, 5-piston, 6-push rod, 7-long hole, 8-mounting tube, 9-threaded hole, 10-through hole, 11-bolt, 12-adjusting ring, 13-adjusting plate, 14-arc-shaped circular groove, 15-adjusting hole, 16-rolling ball, 17-spring, 18-limiting ring, 19-push handle, 20-push handle. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0020] Figures 1 to 3 The utility model discloses an embodiment.

[0021] Embodiment:

[0022] A puncture extraction equipment, including outer sleeve 1, the front end of outer sleeve 1 is connected with outer needle tube 2, and the rear end is set as opening, and inner sleeve 3 is movably arranged in outer sleeve 1, the front end of inner sleeve 3 is connected with inner needle tube 4, and the rear end is set as opening, and the front end of inner needle tube 4 is movably arranged in outer needle tube 2, and piston 5 is arranged in inner needle tube 4, the rear side of piston 5 is connected with push rod 6, and the rear end of push rod 6 is placed in the rear of outer sleeve 1;Outer sleeve 1 is provided with long hole 7 through inside and outside along the front-rear direction, and push handle 20 is installed on the outer wall of inner sleeve 3, and the end of push handle 20 away from inner sleeve 3 is placed on the outside of outer sleeve 1 through long hole 7.In the extraction, first hold outer sleeve 1, insert outer needle tube 2 into puncture site, and move the tip of outer needle tube 2 to be close to the lesion area under the cooperation of ultrasonic equipment, then push handle 20 is pushed forward, inner sleeve 3 is moved in outer sleeve 1 by push handle 20, and inner needle tube 4 is pulled out from the front end of outer needle tube 2, and is inserted into the lesion area, then pull push rod 6 back to drive piston 5 to move back and extract part of the lesion area into inner needle tube 4, after extraction, push handle 20 is pushed back, and inner needle tube 4 is retracted into outer needle tube 2, then outer needle tube 2 can be pulled out, and the whole process only contacts inner needle tube 4 with the lesion area, and outer needle tube 2 does not contact the lesion area, and outer needle tube 2 isolates inner needle tube 4 when pulling out the needle, so that inner needle tube 4 will not contaminate the healthy area.Push handle 20 not only can drive inner needle tube 4 to pull out and retract, but also can control inner needle tube 4 to keep in outer needle tube 2 during pulling out the needle.

[0023] The outer wall of the inner sleeve 3 is sleeved with a mounting pipe 8, the inner wall of the mounting pipe 8 is provided with a second screw thread matched with the first screw thread, and the push handle 20 is mounted on the outer wall of the mounting pipe 8. By setting the first screw thread and the second screw thread, the mounting pipe 8 can be fixed on the outer wall of the inner sleeve 3 in a threaded connection mode, and meanwhile, it is convenient to replace the new inner sleeve 3.

[0024] The outer wall of the mounting pipe 8 is recessed with a threaded hole 9, the push handle 20 is provided with a through hole 10 penetrating both ends, and the threaded hole 9 and the through hole 10 are aligned, and the bolt 11 is screwed into the threaded hole 9 after penetrating the through hole 10. In this way, when the inner sleeve 3 is installed, the mounting pipe 8 is first mounted on the outer wall of the inner sleeve 3, and then the inner sleeve 3 is put into the outer sleeve 1 together, then the threaded hole 9 of the mounting pipe 8 and the long slot 7 are aligned, the bolt 11 is inserted into the through hole 10, the push handle 20 is penetrated into the long slot 7, the through hole 10 and the threaded hole 9 are aligned, and then the bolt 11 is screwed into the threaded hole 9, thereby completing the installation of the push handle 20.

[0025] The outer wall of the mounting pipe 8 is sleeved with an adjusting ring 12, the outer wall of the adjusting ring 12 is slidably attached to the inner wall of the outer sleeve 1, the inner wall of the outer sleeve 1 is provided with an adjusting plate 13 on the side away from the long slot 7 along the front and back directions, a plurality of arc-shaped circular grooves 14 are continuously provided on the side of the adjusting plate 13 facing the inner sleeve 3 along the front and back directions, the adjusting ring 12 is provided with an adjusting hole 15 at the position aligned with the arc-shaped circular grooves 14, a ball 16 is movably arranged in the adjusting hole 15, the ball 16 is connected to the hole bottom of the adjusting hole 15 through a spring 17, a part of the ball 16 protrudes out of the adjusting hole 15 and is clamped in the arc-shaped circular groove 14. In this way, the adjusting ring 12 can be fixed with the adjusting plate 13 at different positions to a certain extent by clamping the ball 16 in different arc-shaped circular grooves 14, so as to control whether the inner needle tube 4 is extended out of the outer needle tube 2. During adjustment, the push handle 20 can be pushed forward and backward, and when the push handle 20 is pushed, the ball 16 is gradually retracted into the adjusting hole 15 by the extrusion of the arc-shaped circular groove 14, and then the push handle 20 moves a distance on the adjusting plate 13, and when the ball 16 is aligned with a new arc-shaped circular groove 14, the ball 16 is protruded out of the adjusting hole 15 again by the elastic force of the spring 17 and is embedded in the arc-shaped circular groove 14, thereby completing the position fixation of the adjusting ring 12 and the adjusting plate 13. In order to avoid the need for a lot of effort to extrude the ball 16 back into the adjusting hole 15 when the push handle 20 is pushed, a small part of the ball 16 can be controlled to protrude out of the adjusting hole 15 and be embedded in the arc-shaped circular groove 14, and the spring 17 can be controlled to have a certain elastic force, so that the operator can easily push the push handle 20 and temporarily fix the position of the adjusting ring 12 and the adjusting plate 13 by the ball 16 and the arc-shaped circular groove 14 when the push handle 20 is pushed, thereby controlling the position of the inner needle tube 4.

[0026] A limiting ring 18 is arranged at the aperture of the adjusting hole 15, and the inner diameter of the limiting ring 18 is smaller than the diameter of the ball 16. By arranging the limiting ring 18, the volume of the ball 16 protruding out of the adjusting hole 15 can be controlled.

[0027] The rear end of the push rod 6 is connected with a pushing handle 19. By arranging the pushing handle 19, the operator can drive the push rod 6 to move forward and backward, so as to control the piston 5 to move forward and backward, and then the cells in the lesion area can be extracted.

[0028] While the application has been described with reference to the exemplary embodiments thereof, it is to be understood that the application is not limited to the exemplary embodiments and embodiments disclosed herein and that a person skilled in the art can design other modifications and embodiments without departing from the principles and spirit of the application. More specifically, various modifications and improvements can be made to the components and / or layout of the subject combination layout within the scope of the present disclosure, drawings and claims. In addition to the modifications and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A puncture extraction device, comprising an outer sleeve (1), wherein the front end of the outer sleeve (1) is connected to an outer needle tube (2), and the rear end is set to be open, characterized in that: An inner sleeve (3) is provided in the outer sleeve (1) for forward and backward movement. The front end of the inner sleeve (3) is connected to the inner needle tube (4), and the rear end is set as an opening. The front end of the inner needle tube (4) is movably provided in the outer needle tube (2). A piston (5) is provided in the inner needle tube (4). The rear side of the piston (5) is connected to a push rod (6). The rear end of the push rod (6) is placed behind the outer sleeve (1). The outer sleeve (1) is provided with a long hole (7) passing through the inside and outside along the front-to-back direction. A push handle (20) is installed on the outer wall of the inner sleeve (3). The end of the push handle (20) away from the inner sleeve (3) passes through the long hole (7) and is placed on the outside of the outer sleeve (1).

2. The puncture extraction device according to claim 1, characterized in that: A mounting tube (8) is sleeved on the outer wall of the inner sleeve (3), the inner sleeve (3) is provided with a first thread, a second thread matching the first thread is provided on the inner wall of the mounting tube (8), and the push handle (20) is mounted on the outer wall of the mounting tube (8).

3. The puncture extraction device according to claim 2, characterized in that: A threaded hole (9) is recessed on the outer wall of the mounting tube (8), and a through hole (10) is provided on the push handle (20) that passes through both ends. When the threaded hole (9) and the through hole (10) are aligned, a bolt (11) passes through the through hole (10) and is threadedly matched with the threaded hole (9) to connect.

4. The puncture extraction device according to claim 2, characterized in that: An adjusting ring (12) is provided around the outer wall of the mounting tube (8), and the outer wall of the adjusting ring (12) is slidably fitted with the inner wall of the outer sleeve (1). An adjusting plate (13) is provided on the inner wall of the outer sleeve (1) away from the long hole (7) along the front-to-back direction, and a plurality of arc-shaped circular grooves (14) are continuously provided on the side of the adjusting plate (13) facing the inner sleeve (3) along the front-to-back direction. An adjusting hole (15) is provided on the adjusting ring (12) at a position aligned with the arc-shaped circular groove (14), and a ball (16) is movably provided in the adjusting hole (15), and the ball (16) is connected to the bottom of the adjusting hole (15) through a spring (17). A portion of the ball (16) protrudes from the adjusting hole (15) and is clamped in the arc-shaped circular groove (14).

5. The puncture extraction device according to claim 4, characterized in that: A limiting ring (18) is provided at the opening of the adjustment hole (15), and the inner diameter of the limiting ring (18) is smaller than the diameter of the ball (16).

6. The puncture extraction device according to claim 1, characterized in that: The rear end of the push rod (6) is connected to a push handle (19).

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