Full-automatic biopsy puncture needle capable of achieving clear guiding

Abstract

The utility model discloses a full-automatic biopsy puncture needle capable of guiding clearly, which comprises an anti-slip grip and a mounting head fixedly arranged at one end of the anti-slip grip, the surface of the mounting head is sequentially provided with a positioning groove and a needle tube groove, and a disposable biopsy needle head assembly is clamped between the positioning groove and the needle tube groove. The full-automatic biopsy puncture needle comprises an anti-slip grip, a power bin and a propelling bin are sequentially formed in the anti-slip grip from left to right, two percussion springs are fixedly installed in the power bin, and one end of each percussion spring is fixedly provided with a propelling mechanism used for pushing a disposable biopsy needle head assembly to sample. According to the biopsy puncture needle, the reflection rings are additionally arranged on the outer needle sleeve every 1 cm, the surfaces of the reflection rings are rough, ultrasonic waves can be effectively reflected, when puncture sampling is carried out, the puncture needle can be accurately guided under the assistance of ultrasonic images, and therefore the sampling difficulty can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection tools, in particular to a fully automatic biopsy puncture needle that can be clearly guided. Background Technique

[0002] A biopsy puncture needle is a tool that inserts a puncture needle into a lesion area under the guidance of CT or B-ultrasound and takes out some lesion tissues for medical detection. Currently, the commonly used biopsy puncture needles mainly consist of a handle and a puncture needle head. The puncture needle head is fixedly installed in the handle, and a spring structure is installed inside the handle. In the firing state, the puncture needle is pushed into the lesion tissue by the elastic force of the spring to achieve sampling of the lesion tissue. For example, a fully automatic biopsy puncture needle with the application number CN202021946707.9 includes a handle and a puncture needle component. The handle includes an upper shell, a lower shell, an upper inner shell, a lower inner shell, a locking switch, a firing button, a firing rod, a first docking bolt, a second docking bolt, and a puncture assembly. The puncture assembly includes an outer tube and an inner needle installed inside the outer tube and concentric with the outer tube axis. The above common types of biopsy puncture needles have the following problems in application:

[0003] 1. The surface of the puncture needle is relatively smooth, which is not conducive to the reflection of ultrasonic waves. During the puncture process, it is easy to not detect the needle tip, so that accurate guidance cannot be carried out, and the puncture needle cannot be accurately positioned at the lesion tissue.

[0004] 2. The handle part and the puncture part of the puncture needle are of an integrated structure, and the whole is a disposable sampling tool. In the actual sampling process, only the puncture part contacts the patient, and the handle part does not contact the patient. All are disposable items, increasing the cost of single sampling. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fully automatic biopsy puncture needle that can be clearly guided, so as to solve the problems of inaccurate guidance and high cost of single sampling of the existing biopsy puncture needles mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A fully automatic biopsy puncture needle that can be clearly guided, including an anti-slip grip and a mounting head fixedly arranged at one end of the anti-slip grip. The surface of the mounting head is sequentially provided with a positioning groove and a needle tube groove. A disposable biopsy needle head assembly is clamped between the positioning groove and the needle tube groove. Inside the anti-slip grip, a power chamber and a propulsion chamber are sequentially arranged from left to right. Two firing springs are fixedly installed inside the power chamber. One end of each of the two firing springs is fixedly provided with a propulsion mechanism for pushing the disposable biopsy needle head assembly to sample. A firing button assembly is installed on the top of the anti-slip grip. Retraction buttons are installed on both sides of the anti-slip grip. A cover mechanism is hinged on the top of the mounting head.

[0007] Preferably, the disposable biopsy needle assembly includes an outer needle sleeve and a syringe barrel disposed inside the outer needle sleeve. A sampling needle core is provided inside the syringe barrel. A plurality of reflection rings are fixedly provided on the back surface of the outer needle sleeve. A positioning chuck is fixedly provided at one end of the outer needle sleeve, and the positioning chuck is matched with a positioning groove.

[0008] Preferably, a guiding tip is fixedly provided at one end of the outer needle sleeve away from the positioning chuck. An inclined cutting head is fixedly provided at one end of the syringe barrel. A conical head is fixedly provided at one end of the sampling needle core. A sample retention groove is provided on one side of the sampling needle core and the conical head. Pushing blocks are fixedly provided at the other ends of the syringe barrel and the sampling needle core respectively.

[0009] Preferably, the pushing mechanism includes a spring plate and a firing rod fixedly provided at one end of the spring plate. A pushing seat is fixedly provided at one end of the firing rod. Two limiting guide rails are fixedly provided on the inner side wall of the pushing chamber. The pushing seat is slidably disposed on the limiting guide rails. The firing rod is slidably disposed inside the anti-slip grip. A shifting connecting rod is fixedly provided at the top of the firing rod. A locking groove is provided at the bottom of the firing rod. The two retraction keys are respectively fixedly provided on the two shifting connecting rods.

[0010] Preferably, the capping mechanism includes a capping member and snap-in blocks fixedly provided on both sides of the bottom of the capping member. Reserved card slots are provided on both sides of the mounting head, and the snap-in blocks are disposed opposite to the reserved card slots.

[0011] Preferably, the firing button assembly includes a bottom plate and a return spring fixedly provided at the top end of the bottom plate. A firing push post is fixedly provided at the top end of the return spring. A first clamping post is fixedly provided on one side of the firing push post. A second clamping post is fixedly provided on the other side of the firing push post. The first clamping post is higher than the second clamping post, and both the first clamping post and the second clamping post are matched with the locking groove.

[0012] Preferably, the distance between two adjacent reflection rings is set to 1 cm, and a blocking plate is fixedly provided at one end of the outer needle sleeve close to the positioning chuck.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. A reflection ring is added to the outer needle sleeve every 1 cm. The surface of the reflection ring is rough and can effectively reflect ultrasonic waves. During the puncture sampling, with the assistance of ultrasonic imaging, the puncture needle can be accurately guided, enabling the needle core to accurately reach the diseased tissue, thereby facilitating the reduction of the sampling difficulty.

[0015] 2. The entire puncture needle is divided into a handle part and a biopsy needle head part. The biopsy needle head can be quickly installed at the handle part by means of clamping. Among them, the biopsy needle head part is a one-time sampling supply, and the handle part can be reused after disinfection. After the sampling is completed, there is no need to discard the puncture needle as a whole, which helps to reduce the cost of single sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the biopsy puncture needle of the present utility model;

[0017] Figure 2 is a schematic cross-sectional structural diagram of the anti-slip grip of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the disposable biopsy needle head assembly of the present utility model;

[0019] Figure 4 is a partially enlarged view of the disposable biopsy needle head assembly of the present utility model;

[0020] Figure 5 is a front cross-sectional view of the firing button assembly of the present utility model;

[0021] Figure 6 is a front cross-sectional view of the firing button assembly of the present utility model;

[0022] Figure 7 is a schematic structural diagram of the firing rod of the present utility model.

[0023] In the figure: 1. Anti-slip grip; 2. Buckle cover; 3. Disposable biopsy needle head assembly; 31. Outer needle sleeve; 32. Blocking disc; 33. Positioning chuck; 34. Reflection ring; 35. Syringe barrel; 36. Guide tip; 37. Beveled head; 38. Sampling groove; 39. Sampling needle core; 310. Cone head; 311. Pushing block; 4. Retreating button; 5. Firing button assembly; 51. Firing button post; 52. First clamping post; 53. Bottom plate; 54. Return spring; 55. Second clamping post; 6. Limit guide rail; 7. Locking groove; 8. Buckling clamping block; 9. Dial link; 10. Power bin; 11. Firing spring; 12. Spring plate; 13. Firing rod; 14. Pushing bin; 15. Installation head; 16. Pushing seat; 17. Positioning groove; 18. Needle tube groove; 19. Reserved clamping groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0025] Please refer to Figures 1-7, the present utility model provides a fully automatic biopsy puncture needle with clear guidance, which includes an anti-slip grip 1 and a mounting head 15 fixedly arranged at one end of the anti-slip grip 1. A positioning groove 17 and a needle tube groove 18 are sequentially formed on the surface of the mounting head 15. A disposable biopsy needle assembly 3 is clamped between the positioning groove 17 and the needle tube groove 18. Inside the anti-slip grip 1, a power chamber 10 and a propulsion chamber 14 are sequentially arranged from left to right. Two firing springs 11 are fixedly installed inside the power chamber 10. One end of each of the two firing springs 11 is fixedly provided with a propulsion mechanism for pushing the disposable biopsy needle assembly 3 to take a sample. A firing button assembly 5 is installed on the top of the anti-slip grip 1. Retraction buttons 4 are installed on both sides of the anti-slip grip 1. A cover mechanism is hinged on the top of the mounting head 15. The distance between adjacent two reflection rings 34 is set to 1 cm. A blocking plate 32 is fixedly arranged at one end of the outer needle sleeve 31 close to the positioning chuck 33.

[0026] Refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 , further, the disposable biopsy needle assembly 3 includes an outer needle sleeve 31 and a syringe barrel 35 arranged inside the outer needle sleeve 31. A sampling needle core 39 is arranged inside the syringe barrel 35. A plurality of reflection rings 34 are fixedly arranged on the back of the outer needle sleeve 31. A positioning chuck 33 is fixedly arranged at one end of the outer needle sleeve 31. The positioning chuck 33 is matched with the positioning groove 17. A guiding tip 36 is fixedly arranged at one end of the outer needle sleeve 31 far from the positioning chuck 33. An inclined cutting head 37 is fixedly arranged at one end of the syringe barrel 35. A conical head 310 is fixedly arranged at one end of the sampling needle core 39. A sample retaining groove 38 is formed on one side of the sampling needle core 39 and the conical head 310. Propulsion blocks 311 are fixedly arranged at the other ends of the syringe barrel 35 and the sampling needle core 39 respectively. The distance between adjacent two reflection rings 34 is set to 1 cm. A blocking plate 32 is fixedly arranged at one end of the outer needle sleeve 31 close to the positioning chuck 33;

[0027] In use, when performing a biopsy sampling, the patient's skin is punctured through the guiding tip 36 and slowly pushed in. During this process, the puncture depth of the outer needle sleeve 31 is observed through ultrasonic imaging. Rough reflection rings 34 are arranged at equal intervals on the surface of the outer needle sleeve 31, which is beneficial for reflecting ultrasonic waves and can provide clear guidance until the guiding tip 36 reaches the edge of the diseased tissue. Subsequently, the sampling needle core 39 is first pushed forward by 15 - 20 mm, the conical head 310 is inserted into the diseased tissue, and then the syringe barrel 35 is pushed forward by the same distance. Relying on the cutting of the bevel head 37, the diseased tissue is sliced, and the tissue cells of the slice are stored in the sample storage groove 38. Subsequently, the outer needle sleeve 31 is pulled out. First, the syringe barrel 35 is retracted to expose the sample storage groove 38, and then the tissue sample in the sample storage groove 38 can be taken out to complete the biopsy sampling. The entire disposable biopsy needle assembly 3 is a disposable item. The purpose of setting the blocking disc 32 is to block tissue fluid and prevent the tissue fluid from sliding down along the outer needle sleeve 31 and entering the anti-slip grip 1. Thus, after the anti-slip grip 1 is disinfected, it can be reused multiple times.

[0028] Refer to Figure 1 , Figure 2 and Figure 3 , Further, the propulsion mechanism includes a spring plate 12 and a firing rod 13 fixedly arranged at one end of the spring plate 12. One end of the firing rod 13 is fixedly provided with a propulsion chuck 16. Two limiting guide rails 6 are fixedly arranged on the inner side wall of the propulsion chamber 14. The propulsion chuck 16 is slidably arranged on the limiting guide rails 6. The firing rod 13 is slidably arranged inside the anti-slip grip 1. The top of the firing rod 13 is fixedly provided with a shifting connecting rod 9. A locking groove 7 is formed at the bottom of the firing rod 13. Two retraction buttons 4 are respectively fixedly arranged on the two shifting connecting rods 9;

[0029] The capping mechanism includes a capping member 2 and fastening blocks 8 fixedly arranged on both sides of the bottom of the capping member 2. Reserved card slots 19 are formed on both sides of the mounting head 15. The fastening blocks 8 are arranged opposite to the reserved card slots 19;

[0030] The firing button assembly 5 includes a bottom plate 53 and a return spring 54 fixedly arranged at the top end of the bottom plate 53. The top end of the return spring 54 is fixedly provided with a firing push post 51. A first clamping post 52 is fixedly arranged on one side of the firing push post 51. A second clamping post 55 is fixedly arranged on the other side of the firing push post 51. The first clamping post 52 is higher than the second clamping post 55. Both the first clamping post 52 and the second clamping post 55 are matched with the locking groove 7;

[0031] During use, press down the firing button assembly 5, causing the firing push post 51 to move downward. At the same time, the first latch post 52 and the second latch post 55 are driven to move downward. Since the second latch post 55 is lower than the first latch post 52, during the downward movement, the second latch post 55 will first disengage from the right firing lever 13. After continuing to move downward, the first latch post 52 disengages from the left firing lever 13. After the first latch post 52 and the second latch post 55 disengage from the firing lever 13, they will, under the elastic force of the firing spring 11, push the firing lever 13 forward, causing the two propulsion chucks 16 to advance forward one after the other, enabling the sampling needle core 39 to advance forward first, and then the syringe barrel 35 to advance forward. During retraction, first control the retraction of the syringe barrel 35 through the left retraction button 4, and then control the retraction of the syringe barrel 35 through the right retraction button 4.

[0032] In the embodiment of the present application during use: First, squeeze the snap-in latch blocks 8 inward from both sides of the mounting head 15 to disengage them from the reserved card slots 19. Subsequently, the snap-on cover member 2 can be lifted to remove the disposable biopsy needle assembly 3. The positioning chuck 33 is snapped into the positioning groove 17, and the outer needle sleeve 31 is snapped into the needle tube groove 18. Pull the syringe barrel 35 and the sampling needle core 39 in sequence, and snap the propulsion blocks 311 thereon onto the two propulsion chucks 16 respectively. The two propulsion chucks 16 are respectively the syringe barrel 35 chuck and the sampling needle core 39 chuck. After installation, snap on the snap-on cover member 2. At this time, the disposable biopsy needle assembly 3 is fixed and cannot be loosened.

[0033] Subsequently, hold the anti-slip grip 1 and pierce the patient's skin through the guiding tip 36, and slowly push it in. During this period, observe the puncture depth of the outer needle sleeve 31 through ultrasonic imaging. Rough reflection rings 34 are arranged at equal intervals on the surface of the outer needle sleeve 31, which is conducive to reflecting ultrasonic waves and can provide clear guidance until the guiding tip 36 reaches the edge of the diseased tissue. Then, press down the firing button assembly 5, causing the firing push post 51 to move downward. At the same time, the first latch post 52 and the second latch post 55 are driven to move downward. Since the second latch post 55 is lower than the first latch post 52, during the downward movement, the second latch post 55 will first disengage from the firing lever 13. After continuing to move downward, the first latch post 52 disengages from the firing lever 13, enabling the two propulsion chucks 16 to advance forward one after the other. After the second latch post 55 disengages from the firing lever 13, it will, under the elastic force of the firing spring 11, push the firing lever 13 forward, thereby pushing the sampling needle core 39 to advance forward first by 15 - 20 mm, and the cone head 310 is inserted into the diseased tissue. Subsequently, the syringe barrel 35 advances forward the same distance. Relying on the cutting of the beveled head 37, the diseased tissue is sliced, and the tissue cells of the slice are stored in the sample storage groove 38. Then, pull out the outer needle sleeve 31 and press the left retraction button 4. The retraction button 4 pulls the firing lever 13 to reset through the connecting rod 9, thereby retracting the syringe barrel 35 and exposing the sample storage groove 38. Subsequently, the tissue sample in the sample storage groove 38 can be taken out to complete the biopsy sampling. After sampling, disassemble the disposable biopsy needle assembly 3 for replacement.

[0034] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fully automatic biopsy puncture needle capable of clear guidance, comprising a non-slip handle (1) and a mounting head (15) fixedly arranged at one end of the non-slip handle (1), characterized in that: The surface of the mounting head (15) is provided with a positioning groove (17) and a needle tube groove (18) in sequence, and a disposable biopsy needle assembly (3) is arranged between the positioning groove (17) and the needle tube groove (18). The interior of the anti-slip handle (1) is provided with a power compartment (10) and a propulsion compartment (14) in sequence from left to right. Two firing springs (11) are fixedly installed inside the power compartment (10), and one end of each of the two firing springs (11) is fixedly provided with a propulsion mechanism for pushing the disposable biopsy needle assembly (3) for sampling. A firing button assembly (5) is installed on the top of the anti-slip handle (1), and retreat buttons (4) are installed on both sides of the anti-slip handle (1). A buckle cover mechanism is hinged on the top of the mounting head (15).

2. A fully automatic biopsy puncture needle with clear guidance according to claim 1, characterized in that: The disposable biopsy needle assembly (3) comprises an outer needle sleeve (31) and a syringe (35) arranged inside the outer needle sleeve (31); a sampling needle core (39) is arranged inside the syringe (35); a plurality of reflection rings (34) are fixedly arranged on the back of the outer needle sleeve (31); a positioning chuck (33) is fixedly arranged at one end of the outer needle sleeve (31); and the positioning chuck (33) matches the positioning groove (17).

3. A fully automatic biopsy puncture needle with clear guidance according to claim 2, characterized in that: A guide tip (36) is fixedly provided at one end of the outer needle sleeve (31) away from the positioning chuck (33), a bevel head (37) is fixedly provided at one end of the syringe (35), a cone head (310) is fixedly provided at one end of the sampling needle core (39), a sample retention groove (38) is provided on one side of the sampling needle core (39) and the cone head (310), and a push block (311) is fixedly provided at the other end of the syringe (35) and the other end of the sampling needle core (39).

4. A fully automatic biopsy puncture needle with clear guidance according to claim 1, characterized in that: The propulsion mechanism comprises a spring plate (12) and a firing rod (13) fixedly arranged at one end of the spring plate (12); a propulsion seat (16) is fixedly arranged at one end of the firing rod (13); two limit guide rails (6) are fixedly arranged on the inner side wall of the propulsion chamber (14); the propulsion seat (16) is slidably arranged on the limit guide rails (6); the firing rod (13) is slidably arranged inside the anti-slip grip (1); a toggle rod (9) is fixedly arranged on the top of the firing rod (13); a locking groove (7) is provided at the bottom of the firing rod (13); and the two retreat buttons (4) are respectively fixedly arranged on the two toggle rods (9).

5. A fully automatic biopsy puncture needle with clear guidance according to claim 1, characterized in that: The buckle cover mechanism comprises a buckle cover member (2) and buckle clamping blocks (8) fixedly arranged on both sides of the bottom of the buckle cover member (2); both sides of the mounting head (15) are provided with reserved clamping slots (19), and the buckle clamping blocks (8) are arranged opposite to the reserved clamping slots (19).

6. A fully automatic biopsy puncture needle with clear guidance according to claim 4, characterized in that: The firing button assembly (5) comprises a base plate (53) and a return spring (54) fixedly arranged on the top of the base plate (53); a firing column (51) is fixedly arranged on the top of the return spring (54); a first clamping column (52) is fixedly arranged on one side of the firing column (51); a second clamping column (55) is fixedly arranged on the other side of the firing column (51); the first clamping column (52) is higher than the second clamping column (55); and both the first clamping column (52) and the second clamping column (55) match the locking groove (7).

7. A fully automatic biopsy puncture needle with clear guidance according to claim 2, characterized in that: The distance between two adjacent reflection rings (34) is set to 1 cm, and a blocking disk (32) is fixedly provided on one end of the outer needle sleeve (31) close to the positioning chuck (33).

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