A medical positioning biopsy puncture gun

Abstract

The invention discloses a medical positioning biopsy puncture gun, which relates to the technical field of medical instruments, wherein the puncture gun shell, an excitation push button connecting rod, an excitation push block, a needle sheath slider, a needle core fixing block, a rebound excitation connecting rod, a rebound push frame, an excitation spring, a needle sheath positioning piece, a push spring plate guide column, a rebound push block, a push spring plate guide column sleeve, an excitation push frame, a rebound push spring, a puncture gun rear shell, and a puncture gun sleeve, the puncture needle is inserted into the biopsy position under image display, the needle sheath of the needle sheath slider is ejected back by the excitation push frame after the first excitation, the puncture needle groove is exposed, the biopsy tissue enters the puncture needle groove, the excitation push frame hits the rebound excitation connecting rod, the meshed excitation push frame push teeth are separated from the needle sheath slider push tooth groove by the guide block, the second rebound push frame is ejected to push the needle sheath slider, and the rebound needle sheath blade cuts and resets the biopsy sampling; the excitation puncture distance does not need to be pre-set based on the doctor's experience, and the distance error during puncture of a small suspicious point is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a medical positioning biopsy puncture gun. Background Art

[0002] Puncture biopsy is the most reliable examination for clinical confirmation of pathological changes of diseases, and the accuracy of sampling is of great significance to the diagnosis and treatment of diseases. Now clinical puncture guns all use two-way front-excitation needle core and needle sheath for biopsy sampling. There must be an excitation distance between the biopsy sampling target and the biopsy puncture gun. The excitation puncture distance needs to be predicted and set based on the doctor's experience. For tiny suspicious points, there will inevitably be front-to-back distance errors in the puncture distance, and even a millimeter of difference will lead to consequences. Summary of the invention

[0003] The present application provides a medical positioning biopsy puncture gun, which solves the technical problems in the prior art that there must be an excitation distance between the biopsy sampling target and the biopsy puncture gun, the excitation puncture distance needs to be set based on the doctor's experience, and there may be front-to-back distance errors in the puncture distance of tiny suspicious points; the application achieves the technical effect that the excitation puncture distance does not need to be set based on the doctor's experience, thereby reducing the distance error during the puncture of tiny suspicious points.

[0004] The present application provides a medical positioning biopsy puncture gun, including a puncture gun shell, an excitation push button connecting rod, an excitation push block, a needle sheath slider, a needle core fixing block, a rebound excitation connecting rod, a rebound push frame, an excitation spring, a needle sheath positioning piece, a push spring guide column plate, a rebound push block, a push spring guide sleeve plate, an excitation push frame, a rebound push spring, a puncture gun rear shell, a puncture gun sleeve, a first group of ejection parts and a second group of rebound parts; the puncture gun shell and the puncture gun rear shell are mirror parts, and the grooves on both sides thereof are combined into a slideway, and two groups of oppositely ejected parts are installed in the slideway, and the puncture gun compression spring is loaded through a push spring device assembled by the push spring guide column plate and the push spring guide sleeve plate; the first group of ejection parts includes: an excitation push button connecting rod, an excitation push block, an excitation push block, a push spring guide column plate, a push spring guide sleeve plate, a push spring frame, a rebound push spring, a puncture gun rear shell, a puncture gun sleeve, a first group of ejection parts and a second group of rebound parts. The trigger spring and the trigger push frame are engaged with the needle sheath slider and ejected into place; the trigger push frame push teeth of the trigger push frame are guided and turned by the triangular guide block on the puncture gun housing to separate from the needle sheath slider; the trigger push frame plate of the trigger push frame hits the rebound trigger connecting rod to stimulate the second group of rebound parts; the second group of rebound parts includes: a rebound trigger connecting rod, a rebound push frame, and a rebound push spring; after being hit, the rebound trigger connecting rod hits the rebound push frame again to hit the separated needle sheath slider to rebound and reset; in order to ensure that the needle sheath slider push tooth groove of the needle sheath slider is engaged with the trigger push frame push teeth of the trigger push frame, the needle sheath positioning piece is installed below the needle sheath slider limit of the needle sheath slider to limit the sliding distance of the trigger push frame.

[0005] Furthermore, the puncture gun shell is a long semicircular slide plate with grooves connected on both sides, and multiple partitions are provided at both ends and in the middle. The partitions are provided with shell fixing mounting holes and positioning columns for positioning and assembly with the rear shell of the puncture gun; the two ends of the rebound push block guide plate are connected to the two partitions, and the bottom is connected to the semicircular arc; the rebound push block support strip is connected to the semicircular arc below, one end is connected to the partition plate rebound push frame spring hook fixing plate, and the other end is used to place the elastic support plate of the excitation push block, and the rebound push block guide plate is the sliding position of the excitation push block; the needle core fixing groove is between the rebound push frame spring hook fixing plate and the outer partition, and there is a semicircular arc groove on the rebound push frame spring hook fixing plate for installing and fixing the needle core fixing block and the needle core; the needle sheath and the rebound push frame share a slide groove in the semicircular arc At the upper end of the circular arc, the slide plane of the common slide groove of the needle sheath and the rebound push frame is shared by the needle sheath slider, the rebound push frame, and the excitation push frame, among which the excitation push frame has no groove, the needle sheath slider and the upper end of the rebound push frame have a slide groove, and the rebound push frame position is a double groove, but the rebound push frame only uses the lower end groove; the lower slide groove of the rebound push frame is lower than the plane of the partition at the lower end of the semicircular arc, and there is a middle partition in the middle of the lower slide groove of the rebound push frame, and the lower slide groove of the rebound push frame is the slide groove of the rebound push slide bar of the rebound push frame and the excitation push slide bar of the excitation push frame; the long hole of the push spring plate slide groove is located in the middle of the puncture gun housing, the push spring device is installed in the position, the push spring device is composed of a push spring guide column plate and a push spring guide sleeve plate, and the push spring device is in the long hole of the push spring plate slide groove The guide block is triangular in shape, and one end of the guide block is connected to the middle partition plate, and the guide block is guided by the oblique triangle impact head end of the pushing tooth of the exciting pushing frame of the exciting pushing frame, and guides the pushing tooth of the exciting pushing frame downward to disengage from the pushing tooth groove of the needle sheath slider on the needle sheath slider; the needle sheath slider is positioned until the needle sheath slider groove is lower than the plane of the middle partition plate. The opening is the position where the needle sheath positioning piece and the needle sheath slider operating button of the needle sheath slider are put into; the excitation push frame limit is a partition plate, the excitation push frame limit is connected to the semicircular arc, the excitation push frame limit is connected to the oblique support bar at the bottom of the semicircular arc of the middle partition, and the excitation push frame limit is divided into upper and lower parts by the long hole of the push spring plate slide groove, which is used to excite the excitation push spring plate of the push frame to hit the stop plate; the push frame tooth slide support bar is higher than the long strip of the excitation push frame limit, and the push frame tooth slide support bar is used to excite the push frame push tooth slide bar and the excitation push frame push tooth distance support bar, when the excitation push frame push tooth slides out of the push frame tooth slide support bar, the excitation push frame push tooth will be guided and turned by the guide block triangle; the needle sheath slide groove is a semicircular groove, which is used for the needle sheath slide groove of the needle sheath slider;The bottom of the push frame spring hook fixing plate is connected to the bottom of the semicircular arc, and the plane of the push frame spring hook fixing plate is a partition at the center line position of the semicircle. There are positioning columns and positioning holes on the surface of the push frame spring hook fixing plate, and there is an opening in the middle and lower end of the push frame spring hook fixing plate. The lower opening is an excitation push button connecting rod slide groove for installing the excitation push button connecting rod of the excitation push button connecting rod, and the middle opening is used for the excitation push frame hook buckle; the excitation plate fixing shaft is a raised cylinder for installing the excitation push button connecting rod mounting tube; the excitation push block support strip , between the push frame spring hook fixing plate and the outer partition plate, the bottom is connected to the semicircular arc, one end is connected to the partition plate push frame spring hook fixing plate, and is used to install the elastic support sheet of the excitation push block; the excitation push block slide bar is connected to the two strips between the push frame spring hook fixing plate and the outer partition plate, and is used to support the excitation push block; the lower end of the rebound excitation connecting rod mounting shaft is connected to the semicircular arc, and the rebound excitation connecting rod mounting shaft is used to insert the rebound excitation connecting rod fixing hole of the rebound excitation connecting rod; the needle core fixing block mounting groove is located on the semicircular arc The spring hook fixing plate of the rebound push frame is connected to the bottom of the semicircular arc below, and the plane of the rebound push frame spring hook fixing plate is a partition at the center line position of the semicircle. There are positioning columns and positioning holes on the surface of the rebound push frame spring hook fixing plate. There is an opening in the middle of the rebound push frame spring hook fixing plate, and the opening is used for the rebound push hook of the rebound push frame to buckle and hang; the positioning concave hole of the push spring plate is located at the concave hole in the middle of the plane on one side of the puncture gun housing. The positioning convex ball is used for positioning the push spring guide column plate; the slide groove of the rebound push frame is a groove on the slide plane shared by the needle sheath and the rebound push frame, and the slide groove of the rebound push frame is used for the installation and sliding of the rebound push frame; the middle partition is located in the middle of the concave arc surface of the puncture gun shell, and the middle partition is divided into upper and lower halves by the long hole of the push spring plate slide groove. There is a fixed shaft or a fixed hole on the plane of the middle partition for assembly; the puncture gun holster fixing plate is located on the raised circular plate on the puncture gun shell, and the puncture gun holster fixing plate is used for the installation of the puncture gun holster. ;

[0006] Furthermore, the excitation push button connecting rod is the excitation switch of the puncture gun, and the excitation push button connecting rod mounting tube is installed on the excitation plate fixed axis of the puncture gun housing; the finger presses the excitation push button backward to push the excitation push block arc of the excitation push block through the excitation push button connecting rod bar, and the excitation push block V-shaped inclined pressure plate of the excitation push block pushes the top push frame to excite; the excitation push button connecting rod bar is installed in the excitation push button connecting rod slide groove of the puncture gun housing.

[0007] Furthermore, the excitation push block is used to transfer the thrust of the excitation push button connecting rod to the excitation push frame hook of the excitation push frame through the excitation push block arc and the excitation push block V-shaped inclined pressure plate; the elastic support plate is used to maintain the position of the excitation push block; the excitation push block guide utilizes the excitation push block support bar and the excitation push block slide groove bar to guide the sliding.

[0008] Furthermore, the needle sheath slider is a cross-shaped strip. At one end of the middle position of the cross is the needle sheath, and at the other end in the axial direction of the needle sheath is a U-shaped groove through which the needle core passes; the slide bar of the needle sheath slider is installed on the common chute of the needle sheath and the spring-back push frame of the puncture gun housing; at one end of the upper part of the needle sheath slider, there is a T-shaped operation button for the needle sheath slider to limit the position, and the needle sheath slider limit is used for the positioning boss of the needle sheath positioning part to be inserted and installed; the tooth-shaped structure of the tooth groove of the needle sheath slider push teeth meshes with the push teeth of the firing push frame of the firing push frame.

[0009] Furthermore, the spring-back push frame is in the shape of a square frame with one vertical side missing; the needle core slide hole is a round hole at the upper end of the vertical side, and the rear end of the round hole penetrates through the U-shaped needle core passing groove; the needle sheath guide slide bar is a long strip that is wider than both sides of the spring-back push plate and is used for sliding and installing in the chute of the spring-back push frame; the spring-back push spring plate round piece is used for installing the spring-back push spring; the spring-back push slide bar is installed on the lower chute of the spring-back push frame; the spring-back push hook is a triangular hook symmetrically extending outward in front of the two horizontal rectangular strips in the middle of the spring-back push frame and is used for hooking the upper chamber on the spring hook fixing plate of the spring-back push frame; the U-shaped needle core passing groove is the needle core passing groove of the needle core fixing block.

[0010] Furthermore, the firing push frame is in the shape of a square frame with one vertical side missing; at the upper end of the firing push frame, the hypotenuse of the triangular push teeth of the firing push frame is connected to an R arc at the rear end, and then connected to two convex teeth. The rear end of the second convex tooth is extended and connected to an R arc and then connected to an upward hypotenuse and then connected to the push tooth slide bar. The material of the firing push frame is nylon elastic plastic, and the tooth shape of the push teeth of the firing push frame fits with the tooth groove of the needle sheath slider push teeth; the push tooth slide bar plays a role in sliding and guiding and transmitting elastic force, and pushes the needle sheath slider to retreat with the elastic force of the spring; the top push frame tooth slide bar chute is a groove on both sides of the push tooth slide bar and is used for placing the top push frame tooth slide bar of the puncture gun housing; the firing push frame hook is a triangular hook symmetrically extending outward at the extended parts of the two horizontal bars in the middle of the firing push frame and is used for hooking on the top push frame spring hook fixing plate of the puncture gun housing; the firing push spring plate has a round piece for placing the firing spring; the vertical rectangular bar of the firing push frame plate is used to impact the spring-back firing connecting rod, the spring-back firing connecting rod push rod, and the second group of spring-back parts; the firing push slide bar is installed on the common chute of the needle sheath and the spring-back push frame of the puncture gun housing.

[0011] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0012] By setting a first group of ejection parts and a second group of rebound parts, the first group of ejection parts includes an excitation push button connecting rod, an excitation push block, an excitation spring and an excitation push frame, which are installed in combination with the puncture gun shell and the rear shell through a slideway to realize the ejection of the needle sheath slider; the second group of rebound parts is composed of a rebound excitation connecting rod, a rebound push frame and a rebound push spring, which are activated by the impact of the excitation push frame to realize the rebound reset of the needle sheath slider; the two groups of parts ensure the accuracy and safety of biopsy puncture through precise meshing and guiding design, as well as the assistance of the push spring device; effectively solve the technical problems in the prior art that there must be an excitation distance between the biopsy sampling target and the biopsy puncture gun, the excitation puncture distance needs to be predicted and set based on the doctor's experience, and there may be a front and rear distance error for the puncture distance of tiny suspicious points; thereby achieving the technical effect that the excitation puncture distance does not need to be predicted and set based on the doctor's experience, thereby reducing the distance error during puncture of tiny suspicious points. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an appearance diagram of the medical positioning biopsy puncture gun of the present invention;

[0014] Figure 2 It is a schematic diagram of the explosion of the medical positioning biopsy puncture gun of the present invention;

[0015] Figure 3 This is an assembly diagram of the rear housing of the puncture gun of the medical positioning biopsy puncture gun of the present invention in the factory state;

[0016] Figure 4 This is an assembly diagram of the resilient push frame of the medical positioning biopsy puncture gun of the present invention in the factory state;

[0017] Figure 5 This is an assembly diagram of the needle sheath slider of the medical positioning biopsy puncture gun of the present invention in the factory state;

[0018] Figure 6 It is a top view schematic diagram of the needle sheath slider of the medical positioning biopsy puncture gun of the present invention;

[0019] Figure 7 It is a schematic diagram of the loading state of the first group of ejection parts and the second group of rebound parts of the medical positioning biopsy puncture gun of the present invention;

[0020] Figure 8 It is a schematic diagram of the first group of ejection parts and the second group of rebound parts of the medical positioning biopsy puncture gun of the present invention in the excited state;

[0021] Fig. 9 This is a schematic diagram of the position of the excitation push button of the medical positioning biopsy puncture gun of the present invention;

[0022] Fig.10 This is a schematic diagram of the position of the needle sheath of the medical positioning biopsy puncture gun of the present invention;

[0023] Fig.11 It is a schematic diagram of the position of the rebound push block of the medical positioning biopsy puncture gun of the present invention;

[0024] Fig.12 It is a schematic diagram of the position of the push spring guide sleeve plate of the medical positioning biopsy puncture gun of the present invention;

[0025] Fig.13 It is a schematic diagram of the meshing state of the push tooth groove of the needle sheath slider and the push tooth of the excitation push frame of the medical positioning biopsy puncture gun of the present invention;

[0026] Fig.14 It is a schematic diagram of the separation state of the push tooth groove of the needle sheath slider and the push tooth of the excitation push frame of the medical positioning biopsy puncture gun of the present invention;

[0027] Fig.15 This is a schematic diagram of the structure of the puncture gun housing of the medical positioning biopsy puncture gun of the present invention;

[0028] Fig.16 This is a schematic diagram of the middle partition of the medical positioning biopsy puncture gun of the present invention;

[0029] Fig.17 It is a schematic diagram of a spring hook fixing plate of a rebound push frame of the medical positioning biopsy puncture gun of the present invention;

[0030] Fig.18 It is a schematic diagram of the long hole of the push spring plate slide groove of the medical positioning biopsy puncture gun of the present invention;

[0031] Fig.19 It is a schematic diagram of a spring hook fixing plate of a push frame of the medical positioning biopsy puncture gun of the present invention;

[0032] Fig. 20 It is a schematic diagram of the limiting position of the excitation and pushing frame of the medical positioning biopsy puncture gun of the present invention;

[0033] Fig.21 It is a schematic diagram of the toothed sliding support strip of the push frame of the medical positioning biopsy puncture gun of the present invention;

[0034] Fig. 22 It is a schematic diagram of the structure of the excitation push button connecting rod of the medical positioning biopsy puncture gun of the present invention;

[0035] Fig.23 It is a schematic diagram of the structure of the excitation push block of the medical positioning biopsy puncture gun of the present invention;

[0036] Fig.24 This is a schematic diagram of the needle sheath slider structure of the medical positioning biopsy puncture gun of the present invention;

[0037] Fig.25 This is a schematic diagram of the structure of the needle core fixing block of the medical positioning biopsy puncture gun of the present invention;

[0038] Fig.26It is a schematic diagram of the rebound excitation connecting rod structure of the medical positioning biopsy puncture gun of the present invention;

[0039] Fig. 27 It is a schematic diagram of the structure of the rebound push frame of the medical positioning biopsy puncture gun of the present invention;

[0040] Fig.28 It is a schematic diagram of the U-shaped needle core passing through the slot of the medical positioning biopsy puncture gun of the present invention;

[0041] Fig.29 It is a schematic diagram of the structure of the needle sheath positioning member of the medical positioning biopsy puncture gun of the present invention;

[0042] Fig.30 It is a schematic diagram of the structure of the push spring guide column plate of the medical positioning biopsy puncture gun of the present invention;

[0043] Fig.31 It is a schematic diagram of the structure of the push spring guide sleeve plate of the medical positioning biopsy puncture gun of the present invention;

[0044] Fig.32 It is a schematic diagram of the structure of the excitation and pushing frame of the medical positioning biopsy puncture gun of the present invention;

[0045] Fig.33 It is a schematic diagram of the puncture gun cover of the medical positioning biopsy puncture gun of the present invention.

[0046] Figure: 1, piercing gun housing; 101, housing fixing mounting hole; 102, rebound push block guide plate; 103, rebound push block support strip; 104, needle core fixing groove; 105, needle sheath and rebound push frame shared slide groove; 106, rebound push frame lower slide groove; 107, push spring plate slide groove long hole; 108, rebound push frame limit; 109, guide block; 110, needle sheath slider positioning; 111, trigger push frame limit; 112, push frame tooth slide support strip; 1 13. Needle sheath slide groove; 114. Push frame spring hook fixing plate; 115. Excitation plate fixing shaft; 116. Excitation push block support strip; 117. Excitation push block slide groove strip; 118. Excitation push button connecting rod slide groove; 119. Rebound excitation connecting rod mounting shaft; 120. Needle core fixing block mounting groove; 121. Rebound push frame spring hook fixing plate; 122. Push spring plate positioning recessed hole; 123. Rebound push frame slide groove; 124. Middle partition; 125. Piercing holster fixing plate;

[0047] 2. Excitation push button connecting rod; 201. Excitation push button connecting rod mounting tube; 202. Excitation connecting rod top arc; 203. Excitation push button connecting rod strip; 204. Excitation push button;

[0048] 3. Excitation push block; 301. Excitation push block arc; 302. Elastic support sheet; 303. Excitation push block guide; 304. Excitation push block V-shaped inclined pressure plate;

[0049] 4. Needle sheath slider; 401. Needle sheath slider bar; 402. Needle sheath slider operating button; 403. Needle sheath slider limiter; 404. Needle sheath; 405. Needle sheath slider push tooth groove; 406. Needle core passes through U-shaped groove;

[0050] 5. Needle core fixing block; 501. Needle core fixing block strip; 502. Needle core;

[0051] 6. Rebound excitation connecting rod; 601. Rebound excitation connecting rod push rod; 602. Rebound excitation connecting rod fixing hole; 603. Rebound excitation connecting rod top arc;

[0052] 7. Rebound push frame; 701. Needle core slide hole; 702. Needle sheath guide slide bar; 703. Rebound push plate; 704. Rebound push spring plate; 705. Rebound push slide bar; 706. Rebound push hook; 707. U-shaped needle core slot;

[0053] 8. Excitation spring;

[0054] 9. Needle sheath positioning piece; 901. Positioning handle; 902. Positioning boss;

[0055] 10. Push spring guide column plate; 1001. Install guide column; 1002. Arc push plate; 1003. Positioning convex ball;

[0056] 11. Rebound push block;

[0057] 12. Push spring guide sleeve plate; 1201. Push plate anti-slip groove; 1202. Mounting pipe;

[0058] 13. Stimulate the push frame; 1301. Stimulate the push frame push gear; 1302. Push gear slide bar; 1303. Push frame tooth slide bar slide slot; 1304. Stimulate the push frame hook; 1305. Stimulate the push spring plate; 1306. Stimulate the push frame plate; 1307. Stimulate the push slide bar;

[0059] 14. Rebound spring;

[0060] 15. Piercing gun rear shell;

[0061] 16. Piercing holster; 1601. Outer corrugation of the piercing holster; 1602. Inner tube of the piercing holster. DETAILED DESCRIPTION

[0062] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0063] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0065] Reference below Figures 1 to 23 Description, according to the creation features of the embodiments of the present invention, the implementation method and the structural principles are further elaborated.

[0066] like Figures 1 to 23 As shown, the medical positioning biopsy puncture gun of the present application includes a puncture gun housing 1, an excitation push button connecting rod 2, an excitation push block 3, a needle sheath slider 4, a needle core fixing block 5, a rebound excitation connecting rod 6, a rebound push frame 7, an excitation spring 8, a needle sheath positioning member 9, a push spring guide column plate 10, a rebound push block 11, a push spring guide sleeve plate 12, an excitation push frame 13, a rebound push spring 14, a puncture gun rear housing 15, a puncture gun sleeve 16, a first group of ejection parts and a second group of rebound parts.

[0067] It should be noted that the main parts of the positioning biopsy puncture gun are made of plastic. In order to ensure the function of the puncture gun, a plastic material with strength, toughness and elasticity is selected, for example, ABS plastic.

[0068] The piercing gun housing 1 and the piercing gun rear housing 15 are mirror images of each other. The grooves on both sides thereof are combined into a slideway, and a first group of ejection parts and a second group of rebound parts are installed in the slideway. The first group of ejection parts and the second group of rebound parts are respectively used to push the compression spring forward and backward to load the piercing gun through a push spring device assembled by a push spring guide column plate 10 and a push spring guide sleeve plate 12; the first group of ejection parts includes: an excitation push button connecting rod 2, an excitation push block 3, an excitation spring 8, and an excitation push frame 13; the second group of rebound parts includes: a rebound excitation connecting rod 6, rebound push frame 7, rebound push spring 14; the first group of ejection parts is ejected backwards first, and the needle sheath slider 4 is separated from the first group of ejection parts when it is ejected into place, and at the same time, the connecting rod 6 is stimulated by impact rebound, which stimulates the second group of rebound parts. The second group of rebound parts rebounds and resets the needle sheath slider 4. The front end cutting edge of the needle sheath 404 cuts off the target sample under the impact of the rebound push frame 7. When taking out the biopsy sample, first use the push spring device to pull the puncture gun to load it, and then push back the needle sheath slider operating button 402 of the needle sheath slider 4 to expose the needle core groove to take out the biopsy sample.

[0069] like Figures 3 to 8As shown, in order to ensure the matching relationship between the needle sheath slider 4 and the excitation push frame 13 of the puncture gun when leaving the factory, the puncture gun must be installed with a needle sheath positioning member 9, and the needle sheath positioning member 9 is installed below the needle sheath slider limit 403 of the needle sheath slider 4 to ensure that the needle sheath slider push tooth groove 405 of the needle sheath slider 4 is engaged with the excitation push frame push tooth 1301 of the excitation push frame 13, and the needle sheath slider slide bar 401 of the needle sheath slider 4 slides in the common slide groove 105 of the needle sheath and the rebound push frame of the puncture gun housing 1; locate the excitation push frame 13 in the biopsy puncture gun, and the excitation push frame 13 is not compressed by the excitation spring 8 to load the chamber, and the excitation spring 8 elastically pushes the excitation push frame push tooth 1301 of the excitation push frame 13 to push forward and disengage from the push frame tooth slide support bar 112, and the triangular excitation push frame push tooth 1301 on the excitation push frame 13 will be guided by the triangular guide block 109 on the puncture gun housing 1 (as shown in FIG. Figure 7 As shown), the push teeth 1301 of the ejector frame are stimulated to be squeezed to the bottom of the guide block 109 (as shown in FIG. Figure 8 As shown), in this way, the pushing tooth 1301 of the ejection frame is separated from the pushing tooth groove 405 of the needle sheath slider, and the needle sheath slider slide bar 401 of the needle sheath slider 4 can be reset by the impact of the second group of rebound parts; the push spring device pushes the second group of rebound parts back and reloads the chamber, and there is a sliding distance between the needle sheath slider slide bar 401 of the needle sheath slider 4 and the needle core slide hole 701 of the rebound ejection frame 7 (as shown in FIG. Figure 7 push the needle sheath slider 4 of the needle sheath slider operating button 402 to make the needle sheath slider 4 retreat, the puncture needle groove on the needle core 502 of the needle core fixing block 5 of the puncture gun is exposed and the biopsy sample can be taken out.

[0070] like Figures 9 to 14As shown, the needle core fixing block strip 501 of the needle core fixing block 5 is installed and fixed in the needle core fixing groove 104 of the puncture gun housing 1. After the needle core 502 of the needle core fixing block 5 slides through the needle core sliding hole 701 of the rebound push frame 7, the needle core 502 slides through the needle sheath 404 of the needle sheath slider 4; the middle part of the positioning biopsy puncture gun is provided with an installation guide column 1001 in the push spring guide column plate 10, and the push spring guide column plate 10 and the push spring guide sleeve plate 12 are combined into a push spring device. The combined installation guide column 1001 and the installation tube 1202 can be respectively inserted through the push spring plate slide groove long hole 107 of the puncture gun housing 1 and the puncture gun rear housing 15 to slide and compress forward and backward, thereby realizing forward pushing and backward pulling for loading; the front of the push spring device Push the first group of ejection parts to load, push the excitation push frame 13 to compress the excitation spring 8, and the excitation push frame hook 1304 on the pushed excitation push frame 13 is inserted and hooked on the push frame spring hook fixing plate 114 of the puncture gun housing 1 to complete the loading. When the excitation push frame 13 is pushed forward, the excitation push frame pushing tooth 1301 on the excitation push frame 13 is engaged with the needle sheath slider pushing tooth groove 405 of the needle sheath slider 4. After engagement, the needle sheath slider 4 passively slides in the common slide groove 105 of the needle sheath and the rebound push frame of the puncture gun housing 1. After sliding, the needle sheath slider slide bar 401 and the rebound push plate 703 leave a distance; the push spring device pulls the second group of rebound parts backward, pulls the rebound push frame 7 to compress the rebound push spring 14, and is pushed forward. The rebound push hook 706 on the pulled rebound push frame 7 is inserted into and hooked on the rebound push frame spring hook fixing plate 121 of the puncture gun housing 1 to complete the loading; the first group of ejection is to eject the needle sheath slider 4 backward; the operator presses the excitation push button 204 of the excitation push button connecting rod 2, and the excitation connecting rod top arc 202 of the excitation push button connecting rod 2 pushes the excitation push block V-shaped inclined pressure plate 304 of the excitation push block 3, and the excitation push block V-shaped inclined pressure plate 304 pushes the excitation push frame hook 1304 on the excitation push frame 13, and the plastic elastic excitation push frame hook 1304 is squeezed and closed, and the excitation push frame hook 1304 is separated from the push frame spring hook fixing plate 114, and the excitation push frame 13 is compressed by the excitation spring 8 The ejection is released and the ejection is performed; the ejected ejection ejection frame plate 1306 on the ejected ejection ejection frame 13 hits the rebound excitation link push rod 601 of the rebound excitation link 6, the rebound excitation link 6 is installed by the rebound excitation link fixing hole 602 through the rebound excitation link installation shaft 119 of the puncture gun housing 1, the rebound excitation link top arc 603 of the rebound excitation link 6 rotates by the rebound excitation link fixing hole 602, and the rebound excitation link top arc 603 rotates and hits the rebound push block 11; the rebound push block 11 hits the rebound ejection frame 7; the rebound ejection frame 7 is ejected when the elastic force of the compressed rebound push spring 14 is released; the ejected rebound ejection frame 7 hits the needle sheath slider 4 to complete the function of positioning puncture biopsy.

[0071] like Figures 9 to 14As shown, an excitation push button connecting rod strip 203 of the excitation push button connecting rod 2 is installed in the excitation push button connecting rod slide groove 118 in the middle upper part, and an excitation push button 204 of the excitation push button connecting rod 2 is located in the middle position on one side outside the puncture gun; a needle sheath slider slide bar 401 of the needle sheath slider 4 is installed in the middle and lower parts of the puncture gun housing 1 and the puncture gun rear housing 15; a needle core 502 is installed in the middle U-shaped arc groove of the needle sheath slider slide bar 401; a push spring guide column plate 10 and a push spring guide sleeve plate 12 are installed on both sides of the outside of the puncture gun housing 1 and the puncture gun rear housing 15, and the push spring guide sleeve plate 12 consists of a The corresponding position of the piercing gun rear shell 15 with a mirror image structure of the piercing gun shell 1 is inserted from the side, and the push spring guide column plate 10 is also inserted. The push spring guide column plate 10 and the push spring guide sleeve plate 12 adopt a guide column and a guide sleeve plug-in combination. After the combination, the first group of ejection parts and the second group of rebound parts can be pushed forward and pulled back by hand to load the compression spring; the piercing gun sleeve 16 is sleeved on one side of the piercing gun; the rebound push frame 7 is installed in the middle position where the piercing gun shell 1 and the piercing gun rear shell 15 are combined; the needle core 502 is passed through the upper needle core sliding hole 701 in the rebound push spring plate 704; The middle upper part of the piercing gun rear shell 15 is a rebound excitation link rod push rod 601 of the rebound excitation link rod 6, on which there is an excitation push button link rod strip 203 of the excitation push button link rod 2; an excitation push button 204 is provided on the upper outer part; a piercing gun sleeve 16 is installed on the outer side of one end; a rebound push block 11 is installed in the middle position of the piercing gun shell 1 and the piercing gun rear shell 15, and the rebound push block 11 is installed in the middle position of the rebound push block guide piece 102 and the rebound push block support strip 103; the middle of the upper part of the piercing gun shell 1 and the piercing gun rear shell 15 is a rebound excitation link rod 601, on which there is an excitation push button link rod strip 203; an excitation push button 204 is provided on the upper outer part; a piercing gun sleeve 16 is installed on the outer side of one end; a rebound push block 11 is installed in the middle position of the rebound push block guide piece 102 and the rebound push block support strip 103; a rebound excitation link rod 601 is installed in the middle position of the rebound excitation link rod 6 Rod push rod 601; in the middle position of the lower part where the puncture gun shell 1 and the rear shell 15 of the puncture gun are combined, there is a needle core fixing block 501; on the outside of the puncture gun is a puncture gun sleeve 16; in the middle position of the lower part where the puncture gun shell 1 and the rear shell 15 of the puncture gun are combined, there are needle sheaths 404 of the needle sheath slider 4, and the needle sheath 404 contains a needle core 502; in the lower middle part of the puncture gun is the needle sheath slider operating button 402; in the upper middle part of the puncture gun is the excitation push button 204; in the middle and outer side of the puncture gun shell 1 is the push spring guide sleeve plate 12; at one end of the outer side of the puncture gun is the puncture gun sleeve 16.

[0072] like Fig.13 and Fig.14As shown, the needle sheath slider push tooth groove 405 of the needle sheath slider 4 is meshed with the excitation push frame push tooth 1301 of the excitation push frame 13, and the triangular hypotenuse of the excitation push frame push tooth 1301 is on the upper side and the triangular hypotenuse of the guide block 109 of the puncture gun housing 1 is on the lower side. During the collision, the rear end of the triangular hypotenuse of the excitation push frame push tooth 1301 is connected to an R arc, and then two convex teeth are connected at the back. The rear end of the second convex tooth is extended and connected to the R arc to connect to the upward hypotenuse connected push tooth slide 1302. After the excitation, the excitation push frame 13 is made of nylon elastic plastic. Since the rear end of the second convex tooth is extended and connected to the R arc, it is at a thin point. After the collision, the excitation push frame push tooth 1301 is bent to the bottom of the guide block 109 triangle.

[0073] When the excitation push rack push tooth 1301 engages and disengages with the needle sheath slider push tooth groove 405 multiple times, the excitation push rack push tooth 1301 may not be able to be completely reset, and the subsequent use of the excitation push rack push tooth 1301 fails to engage with the needle sheath slider push tooth groove 405, and cannot drive the needle sheath slider 4 to slide. Therefore, this time, in order to solve this problem, the material of the excitation push rack push tooth 1301 can be a permanent magnet, and the inner wall material of the needle sheath slider push tooth groove 405 can be a permanent magnet, and the excitation push rack push tooth 1301 and the needle sheath slider push tooth groove 405 are magnetically attracted to each other. When the excitation push rack push tooth 1301 moves to the bottom of the needle sheath slider push tooth groove 405, under the action of the magnetic force, the excitation push rack push tooth 1301 and the needle sheath slider push tooth groove 405 are smoothly engaged together, and this magnetic force will not affect the disengagement process of the excitation push rack push tooth 1301 and the needle sheath slider push tooth groove 405.

[0074] like Figures 15 to 21As shown, the piercing gun housing 1 is a long semicircular arc with stepped slide plates on both sides, with multiple partitions in the middle and at both ends, and the partitions are provided with housing fixing holes 101 for installation with the rear housing 15 of the piercing gun; the two ends of the rebound push block guide piece 102 are connected to the two partitions, and the bottom is connected to the semicircular arc; the rebound push block support strip 103 is connected to the semicircular arc at the bottom, one end is connected to the partition plate rebound push frame spring hook fixing plate 121, and the other end is used to place the elastic support sheet 302 of the excitation push block 3, and the rebound push block guide piece 102 is the sliding position of the excitation push block 3; the needle core fixing groove 104 is between the rebound push frame spring hook fixing plate 121 and the outer partition, and is fixed on the rebound push frame spring hook fixing plate 121. There is a semicircular arc groove on the fixed plate 121 for installing and fixing the needle core fixing block 5 and the needle core 502; the common slide groove 105 of the needle sheath and the rebound push frame is at the upper end of the semicircular arc, and the slide groove plane of the common slide groove 105 of the needle sheath and the rebound push frame is shared by the needle sheath slider 4, the rebound push frame 7, and the excitation push frame 13, wherein the excitation push frame 13 has no groove, the needle sheath slider 4 and the rebound push frame 7 have a slide groove at the upper end, and the rebound push frame 7 is located at a double groove, but the rebound push frame 7 only uses the lower end groove; the lower slide groove 106 of the rebound push frame is lower than the plane of the partition at the lower end of the semicircular arc, and there is an intermediate partition 124 in the middle of the lower slide groove 106 of the rebound push frame, and the lower slide groove 106 of the rebound push frame is 6 is a slide groove of the rebound push slide bar 705 of the rebound push frame 7 and the excitation push slide bar 1307 of the excitation push frame 13; the push spring plate slide groove long hole 107 is located in the middle of the puncture gun housing 1, the push spring device is a combination of the push spring guide column plate 10 and the push spring guide sleeve plate 12, the push spring device slides on the slide groove of the push spring plate slide groove long hole 107, and is used for the compression spring of the rebound push frame 7 and the excitation push frame 13 of the puncture gun; the rebound push frame limit 108 and the lower groove 106 of the rebound push frame are in the same plane, the rebound push frame limit 108 is connected to the semicircular arc, between the rebound push frame limit 108 and the middle partition plate 124, the push spring plate slide groove long hole 107 The rebound push frame limiter 108 on both sides is connected to the oblique support bar at the bottom of the semicircular arc of the middle partition 124, and the rebound push frame limiter 108 is the rebound push frame 7 hitting the stop plate; the guide block 109 is triangular in shape, and one end of the guide block 109 is connected to the middle partition 124. The guide block 109 is guided by the oblique triangle impact of the head end of the excitation push frame push tooth 1301 of the excitation push frame 13, and guides the excitation push frame push tooth 1301 downward to disengage from the needle sheath slider push tooth groove 405 on the needle sheath slider 4; the needle sheath slider positioning 110 to the opening of the needle sheath slide groove 113 below the plane of the middle partition 124 is the position where the needle sheath positioning member 9 and the needle sheath slider operating button 402 of the needle sheath slider 4 are put into;The exciting push frame limit 111 is a partition plate, the exciting push frame limit 111 is connected to the semicircular arc, the exciting push frame limit 111 is connected to the oblique support bar at the bottom of the semicircular arc of the middle partition 124, the exciting push frame limit 111 is divided into an upper and lower part by the long hole 107 of the push spring plate slide groove, and is used to stimulate the exciting push spring plate 1305 of the push frame 13 to hit the stop plate; the push frame tooth slide support strip 112 is higher than the long strip of the exciting push frame limit 111, the push frame tooth slide support strip 112 is used to stimulate the push tooth slide strip 1302 of the push frame 13 and the distance support strip of the push tooth 1301 of the push frame. When the exciting push frame push tooth 1301 slides out of the push frame tooth slide support strip 112, the exciting push frame push tooth 1301 will The guide block 109 is triangularly guided to turn; the needle sheath slot 113 is a semicircular slot, which is used for the needle sheath 404 slot of the needle sheath slider 4; the push frame spring hook fixing plate 114 is connected to the bottom of the semicircular arc below, and the upper plane of the push frame spring hook fixing plate 114 is a partition at the center line position of the semicircle, and there are positioning columns and positioning holes on the surface of the push frame spring hook fixing plate 114, and there is an opening in the middle and lower end of the push frame spring hook fixing plate 114, the lower opening is the excitation push button connecting rod slot 118 for installing the excitation push button connecting rod bar 203 of the excitation push button connecting rod 2, and the middle opening is used for the excitation push frame hook 1304 to buckle and hang; the excitation plate fixing shaft 115 is a raised cylinder for installing the excitation push button connecting rod mounting tube 201; the excitation The push block support strip 116 is between the push frame spring hook fixing plate 114 and the outer partition plate, connected to the semicircular arc at the bottom, and one end is connected to the partition plate push frame spring hook fixing plate 114, which is used to install the elastic support sheet 302 of the excitation push block 3; the excitation push block slide slot strip 117 is connected to the two strips between the push frame spring hook fixing plate 114 and the outer partition plate, which is used to support the excitation push block 3; the lower end of the rebound excitation connecting rod installation shaft 119 is connected to the semicircular arc, and the rebound excitation connecting rod installation shaft 119 is used to insert the rebound excitation connecting rod fixing hole 602 of the rebound excitation connecting rod 6; the needle core fixing block installation groove 120 is located on a plane at the upper end of the semicircular arc, with a groove in the middle, which is used to place the needle core fixing block strip 501 for installing the needle core fixing block 5 The bottom of the semicircular arc is connected to the spring hook fixing plate 121 of the rebound push frame, and the plane on the spring hook fixing plate 121 of the rebound push frame is a partition at the center line position of the semicircle. There are positioning columns and positioning holes on the surface of the spring hook fixing plate 121 of the rebound push frame, and there is an opening in the middle of the spring hook fixing plate 121 of the rebound push frame, and the opening is used for the rebound push hook 706 of the rebound push frame 7 to buckle and hang; the push spring plate positioning recessed hole 122 is located at the middle position of the plane of the side of the puncture gun housing 1, which is used for positioning the positioning convex ball 1003 of the push spring guide column plate 10; the rebound push frame slide groove 123 is a groove in the plane of the slide groove 105 shared by the needle sheath and the rebound push frame, and the rebound push frame slide groove 123 is used for the installation and sliding of the rebound push frame 7;The middle partition 124 is located in the middle of the concave arc surface of the piercing gun housing 1. The middle partition 124 is divided into upper and lower halves by the long hole 107 of the push spring plate slide groove. There is a fixed axis or a fixed hole on the plane of the middle partition 124 for assembly; the piercing gun holster fixing plate 125 is located on the raised circular plate of the piercing gun housing 1. The piercing gun holster fixing plate 125 is used for installing the piercing gun holster 16.

[0075] Among them, the excitation push button connecting rod 2 is the excitation switch of the puncture gun, and the excitation push button connecting rod mounting tube 201 is installed on the excitation plate fixed axis 115 of the puncture gun housing 1; the finger presses the excitation push button 204 backward to excite the connecting rod top arc 202 to push the excitation push block arc 301 of the excitation push block 3 through the excitation push button connecting rod bar 203, and the excitation push block V-shaped inclined pressure plate 304 of the excitation push block 3 pushes the excitation push frame 13 to excite; the excitation push button connecting rod bar 203 is installed in the excitation push button connecting rod slide groove 118 of the puncture gun housing 1.

[0076] It can be understood that the excitation push block 3 is used to transfer the thrust of the excitation push button connecting rod 2 and the excitation connecting rod top arc 202 to the excitation push frame hook 1304 of the excitation push frame 13 through the excitation push block arc 301 of the excitation push block 3 and the excitation push block V-shaped inclined pressure plate 304; the elastic support sheet 302 is used to keep the excitation push block 3 in the return state; the excitation push block guide 303 uses the excitation push block support bar 116 and the excitation push block slide groove bar 117 to guide the sliding.

[0077] like Fig.24 As shown, the needle sheath slider 4 is a cross-shaped bar, with the needle sheath 404 at one end in the middle of the cross, and the needle core passing through a U-shaped groove 406 at the other axial end of the needle sheath 404; the needle sheath slider slide bar 401 is installed on the common slide groove 105 of the needle sheath and the rebound push frame of the puncture gun housing 1; at one end of the upper part of the needle sheath slider 4, there are a T-shaped needle sheath slider operating button 402 and a needle sheath slider limit 403, and the needle sheath slider limit 403 is used for inserting and installing the positioning boss 902 of the needle sheath positioning piece 9; the tooth structure of the needle sheath slider push tooth groove 405 is engaged with the excitation push frame push tooth 1301 of the excitation push frame 13.

[0078] like Fig.25 As shown, the needle core fixing block 5 has a needle core fixing block strip 501 in a cross shape and a middle needle core 502 installed in the needle core fixing groove 104 of the puncture gun housing 1.

[0079] Preferably, Fig.26 As shown, in order to reduce friction, the rebound excitation connecting rod push rod 601 is designed to be H-shaped; the rebound excitation connecting rod fixing hole 602 is used to be installed on the rebound excitation connecting rod mounting shaft 119 of the puncture gun housing 1, and the rebound excitation connecting rod top arc 603.

[0080] like Fig. 27 and Fig.28As shown, the rebound push frame 7 is shaped like a Chinese-eye frame with one vertical line missing; the needle core sliding hole 701 is a circular hole at the upper end of the vertical square, and the rear end of the circular hole is penetrated by the U-shaped needle core through groove 707; the needle sheath guide slide bar 702 is wider than the long strips on both sides of the rebound push plate 703, and is used to be installed in the rebound push frame slide groove 123 for sliding; the rebound push spring plate 704 disc is used to install the rebound push spring 14; the rebound push slide bar 705 is installed on the lower slide groove 106 of the rebound push frame; the rebound push hook 706 is a triangular hook symmetrically outward in front of the two horizontal rectangular strips in the middle of the rebound push frame 7, which is used for the loading hook to be hung on the rebound push frame spring hook fixing plate 121; the U-shaped needle core through groove 707 is the needle core 502 of the needle core fixing block 5 through the groove.

[0081] like Fig.29 As shown, the needle sheath positioning member 9 is an L-shaped plate, with a positioning handle 901 at the upper end, and one end of the positioning boss 902 is placed at the needle sheath slider position 110 on the puncture gun housing 1 below the needle sheath slider limit 403 of the needle sheath slider 4.

[0082] like Fig.30 As shown, the installation guide column 1001 is used to assemble with the push spring guide sleeve plate 12, and there is an arc groove on the concave surface of the semicircular arc plate of the arc push plate 1002; the positioning convex ball 1003 is located in the middle of the concave surface of the semicircular arc plate, and it cooperates with the push spring plate positioning concave hole 122 on the puncture gun housing 1 for positioning.

[0083] like Fig.31 As shown, there is an arc groove on the semicircular arc plate of the push plate anti-slip groove 1201, and its arc concave surface has a mounting tube 1202 round tube for assembly with the push spring guide column plate 10.

[0084] like Fig.32As shown, the shape of the excitation push frame 13 is a frame with one vertical line missing; at the upper end of the excitation push frame 13, the rear end of the triangle hypotenuse of the excitation push frame push tooth 1301 is connected to an R arc, and then two convex teeth are connected at the back, and the rear end of the second convex tooth is extended to an R arc and connected to the upward hypotenuse to connect the push tooth slide 1302, the material of the excitation push frame 13 is nylon elastic plastic, and the tooth shape of the excitation push frame push tooth 1301 is consistent with the needle sheath slider push tooth groove of the needle sheath slider 4; the push tooth slide 1302 plays the role of sliding guide to transmit elastic force, and pushes the needle sheath slider 4 backward with the elastic force of the spring; the push frame tooth slide support strip slide groove 1303 is in the push tooth slide 1302 The grooves on both sides are used for placing the push frame tooth slide support strip 112 of the puncture gun housing 1; the excitation push frame hook 1304 is a triangular hook symmetrically extended outward from the two horizontal bars in the middle of the excitation push frame 13, which is used to hook on the push frame spring hook fixing plate 114 of the puncture gun housing 1; the excitation push spring plate 1305, its disc is used to place the excitation spring 8; the vertical bar of the excitation push frame plate 1306 is used to impact the rebound excitation connecting rod 6 rebound excitation connecting rod push rod 601 to excite the second group of rebound parts; the excitation push slide strip 1307 is installed on the common slide groove 105 of the needle sheath and the rebound push frame of the puncture gun housing 1.

[0085] like Fig.33 As shown, the piercing holster 16 is used to be sleeved on the outside of the piercing gun housing 1 and the piercing gun rear housing 15; the piercing holster outer corrugation 1601 is the outer layer of the piercing holster 16, and the piercing holster outer corrugation 1601 is not easy to slip out of the hand; the piercing holster inner tube 1602 is the inner layer of the piercing holster 16.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A medical positioning biopsy puncture gun, characterized in that: The invention comprises a puncture gun housing (1), an excitation push button connecting rod (2), an excitation push block (3), a needle sheath slider (4), a needle core fixing block (5), a rebound excitation connecting rod (6), a rebound push frame (7), an excitation spring (8), a needle sheath positioning member (9), a push spring guide column plate (10), a rebound push block (11), a push spring guide sleeve plate (12), an excitation push frame (13), a rebound push spring (14), a puncture gun rear housing (15), a puncture gun sleeve (16), a first group of ejection parts and a second group of rebound parts; The piercing gun housing (1) and the piercing gun rear housing (15) are mirror-image parts, and grooves on both sides thereof are combined into a slideway, and two groups of oppositely ejected parts are installed in the slideway. The piercing gun compression spring is loaded through a push spring device assembled by a push spring guide column plate (10) and a push spring guide sleeve plate (12); The first group of ejection parts comprises: an excitation push button connecting rod (2), an excitation push block (3), an excitation spring (8), and an excitation push frame (13); the ejection part excitation push frame (13) engages with the needle sheath slider (4) and ejects into position; the excitation push frame push teeth (1301) of the excitation push frame (13) are guided and turned by the triangular guide block (109) on the puncture gun housing (1) to separate from the needle sheath slider (4); the excitation push frame plate (1306) of the excitation push frame (13) hits the rebound excitation connecting rod (6) to excite the second group of rebound parts; The second group of rebound parts comprises: a rebound excitation connecting rod (6), a rebound push frame (7), and a rebound push spring (14); after being hit, the rebound excitation connecting rod (6) hits the rebound push frame (7) to cause the separated needle sheath slider (4) to hit and rebound and reset; In order to ensure that the needle sheath slider push tooth groove (405) of the needle sheath slider (4) is meshed with the excitation push frame push tooth (1301) of the excitation push frame (13), the needle sheath positioning member (9) is installed below the needle sheath slider limiter (403) of the needle sheath slider (4) to limit the sliding distance of the excitation push frame (13); The excitation push block (3) is used to transmit the thrust of the excitation push button connecting rod (2) to the excitation push frame hook (1304) of the excitation push frame (13) through the excitation push block arc (301) and the excitation push block V-shaped inclined pressure plate (304); the elastic support sheet (302) is used to keep the excitation push block (3) in position; the excitation push block guide (303) is guided to slide by the excitation push block support bar (116) and the excitation push block slide groove bar (117); The rebound pushing frame (7) is in the shape of a square frame with one vertical side missing; the needle core sliding hole (701) is a circular hole at the upper end of the vertical side, and the rear end of the circular hole penetrates through the U-shaped needle core passing groove (707); the needle sheath guiding slide bar (702) is a long bar that extends beyond both sides of the rebound pushing plate (703) and is used to slide in the rebound pushing frame sliding groove (123); the rebound pushing spring plate (704) is a circular plate for installing the rebound pushing spring (14); the rebound pushing slide bar (705) is installed on the lower sliding groove (106) of the rebound pushing frame; the rebound pushing hook (706) is a triangular hook symmetrically extending outwards in front of the two horizontal rectangular bars in the middle of the rebound pushing frame (7) and is used to hook onto the rebound pushing frame spring hook fixing plate (121) during loading; the U-shaped needle core passing groove (707) is a groove through which the needle core (502) of the needle core fixing block (5) passes.

2. The medical positioning biopsy puncture gun according to claim 1, characterized in that: The piercing gun housing (1) is a long semicircular arc-shaped slide plate with grooves on both sides, and a plurality of partitions are provided at both ends and in the middle. The partitions are provided with housing fixing holes (101) and positioning columns for positioning and assembly with the rear housing (15) of the piercing gun; the two ends of the rebound push block guide plate (102) are connected to the two partitions, and the bottom is connected to the semicircular arc; the rebound push block support strip (103) is connected to the semicircular arc at the bottom, one end is connected to the partition plate rebound push frame spring hook fixing plate (121), and the other end is used to place the elastic support plate (302) of the excitation push block (3), and the rebound push block guide plate (102) is the sliding position of the excitation push block (3); the needle core fixing groove (104) is formed between the rebound push frame spring hook fixing plate (121) and the outer Between the partitions, and on the rebound push frame spring hook fixing plate (121) there is a semicircular arc groove for mounting and fixing the needle core fixing block (5) and the needle core (502); the needle sheath and the rebound push frame share the slide groove (105) at the upper end of the semicircular arc, the slide groove plane of the needle sheath and the rebound push frame common slide groove (105) is shared by the needle sheath slider (4), the rebound push frame (7), and the excitation push frame (13), wherein the excitation push frame (13) has no groove, the needle sheath slider (4) and the rebound push frame (7) have a slide groove at the upper end, and the rebound push frame (7) has a double groove, but the rebound push frame (7) only uses the lower end groove; the lower groove (106) on the rebound push frame is the rebound push slide bar (705) of the rebound push frame (7) ) and the slide groove of the excitation push slide bar (1307) of the excitation push frame (13), the lower groove (106) of the rebound push frame is lower than the plane of the partition at the lower end of the semicircular arc, and there is a middle partition (124) in the middle of the lower groove (106) of the rebound push frame; the push spring plate slide groove long hole (107) is located in the middle of the piercing gun housing (1), the push spring device is a push spring guide column plate (10) and a push spring guide sleeve plate (12), the push spring device slides on the slide groove of the push spring plate slide groove long hole (107), and is used for loading the compression spring of the rebound push frame (7) and the excitation push frame (13) of the piercing gun; the rebound push frame limit (108) and the lower groove (106) of the rebound push frame are in the same plane, and the rebound push frame limit (108) ) is connected with a semicircular arc, between the rebound push frame limit (108) and the middle partition (124), the rebound push frame limit (108) on both sides of the push spring plate slide slot long hole (107) is connected to the oblique support strip at the bottom of the semicircular arc of the middle partition (124), and the rebound push frame limit (108) is the rebound push frame (7) impact stop plate; the guide block (109) is triangular in shape, one end of the guide block (109) is connected to the middle partition (124), and the guide block (109) is guided by the oblique triangle impact of the head end of the excitation push frame push tooth (1301) of the excitation push frame (13), and guides the excitation push frame push tooth (1301) downward to disengage from the needle sheath slider push tooth groove (405) on the needle sheath slider (4);The needle sheath slider is positioned (110) to an opening where the needle sheath slide groove (113) is lower than the plane of the middle partition (124), and is a position where the needle sheath positioning member (9) and the needle sheath slider operating button (402) of the needle sheath slider (4) are placed; the excitation push frame limiter (111) is a partition plate, the excitation push frame limiter (111) is connected to the semicircular arc, the excitation push frame limiter (111) is connected to the oblique support bar at the bottom of the semicircular arc of the middle partition (124), the excitation push frame limiter (111) is divided into upper and lower parts by the long hole (107) of the push spring plate slide groove, and is used to excite the excitation push spring plate (1305) of the push frame (13) to hit the stop plate; the push frame tooth slide The support strip (112) is higher than the long strip of the limit (111) of the ejection frame. The ejection frame tooth slide support strip (112) is used to stimulate the push tooth slide strip (1302) of the ejection frame (13) and stimulate the distance support strip of the push tooth (1301) of the ejection frame. When the ejection frame push tooth (1301) slides out of the ejection frame tooth slide support strip (112), the ejection frame push tooth (1301) is guided and turned by the guide block (109) in a triangular shape. The needle sheath slide groove (113) is a semicircular groove, which is used for the needle sheath (404) slide groove of the needle sheath slider (4). The ejection frame spring hook fixing plate (114) is connected to the bottom of the semicircular arc below, and the ejection frame spring hook fixing plate (114) is connected to the bottom of the semicircular arc. The plane is a partition at the center line position of a semicircle, and a positioning column and a positioning hole are provided on the surface of the push frame spring hook fixing plate (114). There is an opening in the middle and the lower end of the push frame spring hook fixing plate (114). The lower opening is an excitation push button connecting rod slide groove (118) for installing the excitation push button connecting rod (2) of the excitation push button connecting rod (2), and the middle opening is used for the excitation push frame hook (1304) to buckle and hang; the excitation plate fixing shaft (115) is a raised cylinder for installing the excitation push button connecting rod mounting tube (201); the excitation push block support strip (116) is between the push frame spring hook fixing plate (114) and the outer partition, and the lower side is connected to the semicircular arc, and one end is connected to the partition The spring hook fixing plate (114) of the broken plate push frame is used to install the elastic support sheet (302) of the excitation push block (3); the excitation push block slide groove strip (117) is connected to the two strips between the spring hook fixing plate (114) of the push frame and the outer partition plate, and is used to support the excitation push block (3); the lower end of the rebound excitation connecting rod mounting shaft (119) is connected to the semicircular arc, and the rebound excitation connecting rod mounting shaft (119) is used to insert the rebound excitation connecting rod fixing hole (602) of the rebound excitation connecting rod (6); the needle core fixing block mounting groove (120) is located on a plane at the upper end of the semicircular arc, and has a groove in the middle, which is used to place the needle core fixing block strip (501) for installing the needle core fixing block (5);The bottom of the semicircular arc is connected to the spring hook fixing plate (121) of the rebound push frame. The upper plane of the spring hook fixing plate (121) of the rebound push frame is a partition at the center line position of the semicircle. The surface of the spring hook fixing plate (121) of the rebound push frame has a positioning column and a positioning hole. There is an opening in the middle of the spring hook fixing plate (121) of the rebound push frame, and the opening is used for the rebound push hook (706) of the rebound push frame (7) to buckle and hang; the push spring plate positioning recessed hole (122) is located at the middle position of the plane of one side of the piercing gun housing (1), and is used for positioning the positioning convex ball (1003) of the push spring guide column plate (10); the rebound push frame slide The groove (123) is a groove on the plane of the slide groove (105) shared by the needle sheath and the rebound push frame, and the rebound push frame slide groove (123) is used for the rebound push frame (7) to slide and install; the middle partition (124) is located at the middle position of the concave arc surface of the puncture gun housing (1), and the middle partition (124) is divided into upper and lower halves by the long hole (107) of the push spring plate slide groove. A fixed shaft or a fixed hole is provided on the plane of the middle partition (124) for assembly; the puncture gun holster fixing plate (125) is located on the raised circular plate on the puncture gun housing (1), and the puncture gun holster fixing plate (125) is used for installing the puncture gun holster (16). ; 3. The medical positioning biopsy puncture gun according to claim 1, characterized in that: The firing push button link (2) is the firing switch of the puncture gun. The firing push button link mounting tube (201) is installed on the firing plate fixing shaft (115) of the puncture gun housing (1); when the finger presses the firing push button (204) backward, the firing link top arc (202) of the firing push button link bar (203) pushes the firing push block arc (301) of the firing push block (3), and the V-shaped inclined pressure plate (304) of the firing push block (3) pushes to fire the firing pushing frame (13); the firing push button link bar (203) is installed in the firing push button link sliding groove (118) of the puncture gun housing (1).

4. The medical positioning biopsy puncture gun according to claim 1, characterized in that: The needle sheath slider (4) is a cross-shaped bar. At one end of the middle position of the cross is the needle sheath (404), and at the other axial end of the needle sheath (404) is the U-shaped groove (406) for the needle core to pass through; the needle sheath slider slide bar (401) is installed on the common sliding groove (105) of the needle sheath and the rebound pushing frame of the puncture gun housing (1); at one end of the upper part of the needle sheath slider (4) is a T-shaped needle sheath slider operation button (402) and the needle sheath slider limit (403), and the needle sheath slider limit (403) is used for the positioning boss (902) of the needle sheath positioning part (9) to be inserted and installed; the tooth-shaped structure of the needle sheath slider push tooth groove (405) meshes with the firing push tooth (1301) of the firing pushing frame (13).

5. The medical positioning biopsy puncture gun according to claim 2, characterized in that: The excitation push frame (13) is in the shape of a square frame with one vertical side missing; at the upper end of the excitation push frame (13), the hypotenuse rear end of the excitation push frame push tooth (1301) is connected to an R arc, followed by two convex teeth, and the rear end of the extension of the second convex tooth is connected to an R arc and then connected to an upward hypotenuse to connect the push tooth slide bar (1302). The material of the excitation push frame (13) is nylon elastic plastic, and the tooth shape of the excitation push frame push tooth (1301) fits with the push tooth groove (405) of the needle sheath slider (4); the push tooth slide bar (1302) plays a role in sliding guidance and transmitting elastic force, and the elastic force of the spring pushes the needle sheath slider (4) to retreat; the push frame tooth slide bar chute (1303) is a groove on both sides of the push tooth slide bar (1302) for placing the push frame tooth slide bar (112) of the puncture gun housing (1); the excitation push frame hook (1304) is a triangular hook symmetrically extending outward from the extension of the two horizontal bars in the middle of the excitation push frame (13) for hooking on the push frame spring hook fixing plate (114) of the puncture gun housing (1); the excitation push spring plate (1305) has a circular plate for placing the excitation spring (8); the excitation push frame plate (1306) is a vertical strip for hitting and rebounding the excitation link (6), the excitation link push rod (601) to excite the second group of rebounding parts; the excitation push slide bar (1307) is installed on the common chute (105) of the needle sheath and the rebounding push frame of the puncture gun housing (1).

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