CN112022303A - Micro ovarian tissue biopsy device - Google Patents

Abstract

The present invention relates to the field of medical instruments, in particular to a microscopic ovarian tissue biopsy device, comprising: a puncture cannula, a biopsy forceps rod casing, a biopsy forceps rod, a biopsy forceps casing, a biopsy forceps, a puncture cannula seat, a bidirectional damping sleeve, Auxiliary connector, biopsy forceps rod holder, pressing head, spring. In the micro-volume ovarian tissue biopsy device of the present invention, the bidirectional damping sleeve inside the biopsy forceps rod seat can not only perform a bidirectional emergency stop limit on the biopsy forceps rod casing, but also ensure internal air tightness, prevent liquid leakage, etc. The stability of the device during use. The elastic pressing structure at the back end of the biopsy forceps rod can make the biopsy forceps in a folded state when there is no external force. Compared with the normal state of the biopsy forceps, which is in an open state, the device can be pulled back and forth, which is convenient for freeing the doctor's hand to fold control. , improve the efficiency of the operation and reduce the physical exertion of the doctor.

Description

Micro ovarian tissue biopsy device

technical field

The invention relates to the field of medical devices, in particular, to a microscopic ovarian tissue biopsy device.

Background technique

Ovarian tumor is a common gynecological tumor. Since the ovary is located in the deep pelvic cavity, early lesions are not easy to detect. The composition of ovarian tissue is very complex, and the histological structure and biological behavior of different types of ovarian tumors are very different. According to histological classification, ovarian tumors are divided into epithelial tumors, germ cell tumors, sex cord-stromal tumors and secondary tumors. , according to the nature of the tumor is divided into benign, borderline and malignant tumors.

Given that ovarian tumors are often asymptomatic in the early stage, the tumor mass is small, and they are often found occasionally during gynecological examinations during physical examination. The initial diagnosis is usually based on the patient's age, medical history and local characteristics. Pathology is the standard for the diagnosis and pathological staging of ovarian tumors. Fundamentals of cancer treatment options. The commonly used methods are open or laparoscopic multi-point biopsy of ovarian tissue and aspiration of peritoneal fluid for cytological examination. However, only less than 30% of patients with epithelial ovarian cancer are found to have tumors confined to the ovary, and most of them have spread to the pelvis and abdominal cavity. organs, so early diagnosis is a big problem. In addition, in actual operation, it has the following defects:

First, the damage to the ovarian tissue is relatively large, and the open or laparoscopic surgery is very traumatic. The biopsy forceps can easily damage the surrounding normal ovarian tissue during ovarian biopsy, affecting ovarian function, especially for young patients with fertility requirements.

Second, a second operation is required: if the nature of the tumor cannot be determined during the operation, the excised ovarian tumor should be subjected to a quick frozen histopathological examination, and a second operation and/or adjuvant therapy should be performed if necessary after a clear diagnosis. Therefore, a non-invasive microscopic ovarian tissue biopsy device is urgently needed, which can qualitatively diagnose ovarian tumors before surgery. The invention designs a microscopic ovarian tissue biopsy device under the guidance of B-ultrasound, which can accurately locate the tissue biopsy under the guidance of ultrasound, and is non-invasive to patients.

Third, for young patients with fertility needs to diagnose benign tumors or some ovarian cysts with special properties, such as ovarian chocolate cysts, simple micro-tissue biopsy, aspiration and injection can solve the patient's clinical symptoms, and no laparotomy or laparoscopy is required. Surgery can make a clear diagnosis and treatment, and can also maximize the preservation of the patient's fertility.

Fourth, scientific research is the driving force for clinical development. At present, conventional scientific research specimens are derived from patients during the surgical operation of the ovary. The invention designs a micro-ovarian tissue biopsy device that is non-invasive to the patient, and can accurately locate the tissue biopsy under the guidance of ultrasound, and collect trace amounts of ovarian tissue. The tissue is used for basic research, and local injection can also be used for drug efficacy research.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a stable and reliable puncture, suction, drug injection and biopsy integrated ovarian micro-tissue biopsy device.

The purpose of this invention is to realize through the following technical solutions:

The invention provides a microscopic ovarian tissue biopsy device, comprising: a puncture cannula, a biopsy forceps rod casing, a biopsy forceps rod, a biopsy forceps casing, a biopsy forceps, a puncture cannula seat, a bidirectional damping sleeve, an auxiliary joint, and a biopsy forceps Rod seat, pressing head, spring;

The inner sleeve of the puncture sleeve is provided with a biopsy forceps rod sleeve and a biopsy forceps sleeve, the biopsy forceps rod sleeve is sleeved with a biopsy forceps rod, and the biopsy forceps sleeve is sleeved with a biopsy forceps; the biopsy forceps rod is connected with the biopsy forceps, The biopsy forceps pierce the biopsy tissue and clamp it under the push of the biopsy forceps rod;

The rear end of the puncture cannula is connected with a puncture cannula seat, the puncture cannula seat is provided with a two-way damping sleeve and an auxiliary joint, the biopsy forceps rod casing is pierced with a bidirectional damping sleeve, and the biopsy forceps rod casing extends out of the puncture casing seat The rear end is connected with the biopsy forceps rod seat, the rear end of the biopsy forceps rod seat is provided with a pressing groove, the pressing head is installed in the pressing groove and connected with the biopsy forceps rod, the spring is sleeved on the biopsy forceps rod, and the two ends press against the top respectively the bottom surface of the head and the pressing groove.

Further, the forceps inspection sleeve is provided with a biopsy forceps groove from the front end along the axial direction, and a biopsy forceps is arranged in the biopsy forceps groove. The folded-back connecting piece has elastic deformation characteristics; when there is no external force, both sides of the folded-back connecting piece are in an elastically open state; both sides of the folded-back connecting piece are connected with biopsy forceps forceps flaps.

Further, the biopsy forceps forceps flap is a semi-shuttle type structure, the inside of the biopsy forceps forceps flap is a concave curved surface structure, and the front end of the biopsy forceps forceps flap is a sharp tip, and the end edge of the port of the concave curved surface structure on the biopsy forceps forceps flap is provided with With sharp cutting edge, the two biopsy forceps form a shuttle shape as a whole when the flaps of the forceps are closed.

Further, a plurality of barbs are arranged on the inner concave surface of the flap of the biopsy forceps, and the barbs are inclined toward the rearward direction.

Further, guide ribs protruding outward are provided along the front and rear directions on the outer sides of the two side sections of the back-folded connecting piece, and guide ribs that are consistent with the raised cross-section of the guide ribs are provided on the inner wall of the biopsy forceps groove of the biopsy forceps sleeve in the upper and lower directions. groove.

Further, a shift pin is provided along the left and right side directions at the middle height position of the bioptome slot near the notch.

Further, the biopsy forceps adopts a split-type opening and closing structure, and the biopsy forceps comprises several biopsy forceps that are angularly distributed around the circumference, and the biopsy forceps include a rear elastic connection flap and an anterior forceps flap; the biopsy forceps are connected by the elastic connection flap It is located at the port of the biopsy forceps rod; the elastic connecting flap has elastic deformation characteristics, when the biopsy forceps is not subjected to external force, the elastic connecting flap elastically expands to the outside; The cutting edge and the serrations arranged in the front-rear direction, the front end of the forceps flap is set as a tip structure that closes inwardly in an arc shape; when the biopsy forceps is in the closed state, all the biopsy forceps are elastically deformed into a cylindrical structure as a whole, and the adjacent forceps The serrations of the flaps are engaged with each other, and the front tips of the forceps flaps are in a closed state.

Further, the inner surface of the forceps flap is provided with barbs, the front end port of the biopsy forceps rod is provided with a helical wire fixing block, the front end of the helical wire fixing block is connected with a helical wire, and the helical wire is spirally toward the front side. Extend to the inside of the biopsy forceps.

Further, the biopsy forceps includes a blade-blade fixing tube and a blade-blade arranged on the blade-blade fixing tube; the rear part of the blade-blade is a plane structure, and the edges on both sides are arc-shaped end face profiles; the blade-blade front part is warped. Semi-circular arc-shaped structure; the entire edge of the blade is smooth and smooth contour end edge, and the front and rear of the end edge are arranged with cutting edge serrations; the inner position of the port of the blade fixed tube is provided with a spiral twisted wire.

Further, an axial channel is arranged inside the puncture sleeve seat along the axial direction, and a two-way damping sleeve is arranged inside the axial channel. The tube is connected with a syringe; the port of the pressing groove is provided with an inwardly protruding step structure.

In the micro-volume ovarian tissue biopsy device of the present invention, the bidirectional damping sleeve inside the biopsy forceps rod seat can not only perform a bidirectional emergency stop limit on the biopsy forceps rod casing, but also ensure internal air tightness, prevent liquid leakage, etc. The stability of the device during use is improved. The elastic pressing structure at the rear end of the biopsy forceps rod can make the biopsy forceps in a folded state when there is no external force. Compared with the normal state of the biopsy forceps, which is in an open state, the device can be pulled back and forth, which is convenient for freeing the doctor's hands to fold. Control, improve the efficiency of the operation and reduce the physical exertion of the doctor.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the structure diagram of the micro ovarian tissue biopsy device of the present invention;

Fig. 2 is the cutaway view of unreleased biopsy forceps in the first technical solution of the micro-ovarian tissue biopsy device of the present invention;

Fig. 3 is a cutaway view of the structure of Fig. 2;

Fig. 4 is the cutaway view when the biopsy forceps is released in the first technical solution of the micro-ovarian tissue biopsy device of the present invention;

Figure 5 is a cutaway view of the structure of Figure 4;

6 is a cutaway view of a biopsy forceps casing in the first technical solution of the micro-ovarian tissue biopsy device of the present invention;

7 is a structural diagram of biopsy forceps in the first technical solution of the micro-ovarian tissue biopsy device of the present invention;

8 is a structural diagram of a guide rib in the first technical solution of the micro-ovarian tissue biopsy device of the present invention;

Fig. 9 is the cutaway view of biopsy forceps unreleased in the second technical solution of the micro ovarian tissue biopsy device of the present invention;

Figure 10 is a cutaway view of the structure of Figure 9;

Figure 11 is a cutaway view of the structure of Figure 10;

Fig. 12 is the cutaway view when the biopsy forceps is released in the second technical solution of the micro ovarian tissue biopsy device of the present invention;

Figure 13 is a cutaway view of the structure of Figure 12;

14 is a structural diagram of an angle of the clamp valve in the second technical solution of the micro-ovarian tissue biopsy device of the present invention;

15 is a structural diagram of another angle of the clamp valve in the second technical solution of the micro-ovarian tissue biopsy device of the present invention;

16 is a structural diagram of biopsy forceps in the third technical solution of the micro-ovarian tissue biopsy device of the present invention;

Figure 17 is a cutaway view of the operation site in the micro-ovarian tissue biopsy device of the present invention;

Figure 18 is a cutaway view of the structure of Figure 17;

The reference signs are: 1, puncture sleeve; 2, biopsy forceps rod; 3, biopsy forceps rod; 4, biopsy forceps casing; 5, puncture cannula seat; 6, two-way damping sleeve; 7, auxiliary joint ; 8. Biopsy forceps rod seat; 9. Pressing head; 10. Spring; 11. Pressing groove; 12. Biopsy forceps groove; 13. Fold back connecting piece; 14. Biopsy forceps forceps flap; 15. Cutting edge; 16. Barb ; 17, guide ribs; 18, guide grooves; 19, stop pins; 20, biopsy forceps; 21, elastic connection flaps; 22, forceps flaps; 23, saw teeth; twisted wire; 26, fixed tube of blade knife; 27, blade blade; 28, serrated edge; 29, axial channel; 30, valve; 31, suction tube; 32, syringe; 33, step structure.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIGS. 1 to 18 , a microscopic ovarian tissue biopsy device according to an embodiment of the present invention includes: a puncture cannula 1, a biopsy forceps rod cannula 2, a biopsy forceps rod 3, a biopsy forceps cannula 4, a biopsy forceps, a puncture Casing seat 5, two-way damping sleeve 6, auxiliary joint 7, biopsy forceps rod seat 8, pressing head 9, spring 10;

The puncture sleeve 1 is sleeved with a biopsy forceps rod sleeve 2 and a biopsy forceps sleeve 4 that are connected, the biopsy forceps rod sleeve 2 is sleeved with a biopsy forceps rod 3, and the biopsy forceps sleeve 4 is sleeved with a biopsy forceps. The biopsy forceps rod 3 is connected with the biopsy forceps, and the biopsy forceps pierce the biopsy tissue under the push of the biopsy forceps rod 3 and clamp it;

The rear end of the puncture cannula 1 is connected with a puncture cannula seat 5, the puncture cannula seat 5 is provided with a two-way damping sleeve 6 and a secondary joint 7, the biopsy forceps rod cannula 2 is worn with a two-way damping sleeve 6, and the biopsy forceps rod sleeve The rear end of the tube 2 extending out of the puncture cannula seat 5 is connected with the biopsy forceps rod seat 8, the rear end of the biopsy forceps rod seat 8 is provided with a pressing groove 11, and the pressing head 9 is installed in the pressing groove 11 and is connected with the biopsy forceps rod 3, The spring 10 is sleeved on the biopsy forceps rod 3 and the two ends of the spring 10 abut against the bottom surface of the pressing head 9 and the pressing groove 11 respectively.

In the micro-volume ovarian tissue biopsy device of the present invention, the bidirectional damping sleeve 6 inside the biopsy forceps rod holder 8 can not only perform a bidirectional emergency stop limit on the biopsy forceps rod casing 2, but also ensure the internal air tightness and prevent liquid leakage, etc. situation, to ensure the stability of the device during use. The elastic pressing structure at the rear end of the biopsy forceps rod sleeve 2 can make the biopsy forceps in a folded state when there is no external force. Compared with the normal state of the biopsy forceps, which is in an open state, the device can be pulled back and forth, which is convenient for freeing the doctor's hand. The retraction control improves the efficiency of the operation and reduces the physical exertion of the doctor.

Among them, the forceps inspection sleeve is provided with a biopsy forceps groove 12 from the front end along the axial direction, and a biopsy forceps is arranged in the biopsy forceps groove 12. The biopsy forceps includes a folded back piece 13 and a biopsy forceps forceps flap 14, and the backfolded piece 13 adopts the middle The segmented arc back-folded structure, the back-folded link 13 has elastic deformation characteristics; when there is no external force, both sides of the back-folded link 13 are in an elastically open state; both sides of the back-folded link 13 are connected with biopsy forceps.

The device is mainly used to take a biopsy of the ovary as a pathological examination to confirm the diagnosis. The device is mainly composed of a puncture site and an operation site. The outside of the puncture site is a puncture cannula 1, and the puncture cannula 1 is a slender round tube with a front end. Bevel tip. The rear end of the puncture cannula 1 is coaxially and fixedly connected with a puncture cannula seat 5 . A biopsy structure is sleeved inside the puncture cannula 1, and the outside of the biopsy structure inside the puncture cannula 1 is a biopsy forceps rod cannula 2, and the biopsy forceps rod cannula 2 is also a slender round tube. 2 The front end is coaxially fixedly connected with a biopsy forceps casing 4 , and the outer diameter of the biopsy forceps casing 4 is larger than the biopsy forceps rod casing 2 . The biopsy forceps casing 4 is provided with a biopsy forceps groove 12 from the front end in the axial direction. The internal cross section of the biopsy forceps groove 12 is rectangular. A biopsy forceps rod 3 is sleeved inside the biopsy forceps rod casing 2, and a biopsy forceps is fixedly connected to the front end of the biopsy forceps rod 3. In the first technical solution, the biopsy forceps is mainly formed by connecting the biopsy forceps flaps 14 with the back-folded connecting pieces 13. The connecting piece 13 adopts an arc-folded structure in the middle section. The two sides of the connecting piece 13 have an included angle, and the connecting piece 13 has a certain elastic deformation characteristic. The sides are elastically open. Biopsy forceps flaps 14 are integrally fixed on both outer ends of the folded-back connecting piece 13 respectively. When the folded-back connecting piece 13 is in a state of no external force, the biopsy forceps forceps flaps 14 are in an open state. When both of them are elastically closed to the middle under the inward pressing force, the two biopsy forceps forceps flaps 14 are also closed to the middle until they are closed.

Among them, the biopsy forceps forceps flap 14 is a semi-shuttle type structure, the inside of the biopsy forceps forceps flap 14 has a concave curved surface structure, and the front end of the biopsy forceps forceps flap 14 is a sharp tip, and the port end of the concave curved surface structure on the biopsy forceps forceps flap 14 The edge is provided with a sharp edge 15, and the two biopsy forceps forceps flaps 14 are integrally formed into a shuttle shape when they are closed.

Biopsy forceps forceps flap 14 is similar to a half-shuttle type structure, with a curved surface structure with a certain concave inside, and a front end is a sharp tip, a sharp edge 15 is designed at the end edge of the port of the concave curved surface structure, and both sides of biopsy forceps forceps flap 14 are provided. The cutting edge 15 of the end edge tends to face the vertical direction in FIG. 7 , so that when the back-folded connecting piece 13 drives the biopsy forceps flap 14 to fold in the vertical direction in FIG. 7 , the biopsy forceps flap 14 is in the process of closing. The middle cutting edge 15 can cut the biopsy tissue in the closing direction. The above-mentioned structural design of the cutting edge 15 is added to the end edge to ensure that the cutting direction and the cutting edge 15 are close to the same, and the cutting can be facilitated. At the same time, when the two biopsy forceps forceps flaps 14 are closed, a shuttle shape is formed as a whole and the front end is a sharp tip This design enables the biopsy forceps to easily penetrate into the biopsy tissue, and cuts the biopsy tissue at the side by matching the cutting edge 15 at the end edge to cut the biopsy tissue at the side during closing, which ensures the sampling biopsy inside the two biopsy forceps flaps 14 during closing. It is completely detached from the ovarian biopsy tissue and can be easily removed.

Among them, several barbs 16 are provided on the inner concave surface of the forceps flap 14 of the biopsy forceps, and the barbs 16 are inclined toward the rear side direction.

A number of barbs 16 are fixedly arranged on the inner concave surface of the forceps flap 14 of the biopsy forceps. The barbs 16 are inclined toward the rear side, which can hook the biopsy tissue clamped inside the forceps, and can ensure that the biopsy forceps are clamped on the inside of the forceps. During the removal process, the success rate of biopsy removal can be maximized. At the same time, in the process of clipping, for the part of the biopsy tissue that cannot be completely cut, the hooking of the barbs 16 can drive the local tearing and separation of the biopsy tissue, avoiding the need for more than 15 cutting edges of the biopsy forceps. Repeated opening and closing cutting.

Among them, guide ribs 17 protruding to the outside are provided on the outer sides of the two side sections of the back-folded connecting piece 13 along the front-rear direction, and the inner walls of the biopsy forceps groove 12 of the biopsy forceps casing 4 are provided with protrusions corresponding to the guide ribs 17 on the inner wall in the upper and lower directions. Guide groove 18 with matching cross section.

Guide ribs 17 protruding to the outside are designed along the front and rear directions on the outer surfaces of the two side sections of the folded-back connecting piece 13 , and on the inner wall of the biopsy forceps groove 12 of the biopsy forceps sleeve 4 in the up-down direction are designed with the guide ribs 17 protruding. A guide groove 18 with an identical cross-section is formed, and the guide groove 18 extends to the inside of the biopsy forceps sleeve 4 along the front-rear axial direction. At the same time, the width of the biopsy forceps groove 12 in the left and right directions is slightly larger than the width of the back-folded connecting piece 13 , which can guide the back-folded connecting piece 13 of the biopsy forceps and prevent the biopsy forceps from being skewed.

Wherein, a shift pin 19 is provided along the left and right side directions in the middle height position of the biopsy forceps slot 12 near the notch.

A shift pin 19 is fixedly arranged in the left-right direction in the middle height position of the bioptome slot 12 near the notch. Specifically, a stop pin 19 is fixed horizontally at the middle position of the port of the biopsy forceps cannula 4. The stop pin 19 can limit the biopsy forceps, prevent the biopsy forceps from being completely separated from the inside of the biopsy forceps cannula 4, and ensure the biopsy of the biopsy forceps. The structure of the guide ribs 17 of the forceps can always be located inside the guide grooves 18 of the biopsy forceps sleeve 4, and can always guide the biopsy forceps.

Among them, the biopsy forceps adopts a split opening and closing structure, and the biopsy forceps includes a plurality of biopsy forceps 20 distributed at an angle around the circumference. The biopsy forceps 20 includes a rear elastic connection flap 21 and an anterior forceps flap 22; The connecting flap 21 is connected to the port of the biopsy forceps rod 3; the elastic connecting flap 21 has elastic deformation characteristics, when the biopsy forceps is not acted upon by an external force, the elastic connecting flap 21 is elastically opened to the outside; Both sides of the flap 22 are provided with cutting edges 15 and serrations 23 arranged in the front-rear direction, and the front end of the forceps flap 22 is provided with a tip structure that is closed inward in an arcuate manner; when the biopsy forceps is in a closed state, all biopsy forceps The whole elastically deformed into a cylindrical structure, the serrations 23 of the adjacent jaws 22 are engaged with each other, and the front ends of the jaws 22 are in a closed state.

The jaws of the biopsy forceps of the device can also adopt the second technical solution. The biopsy forceps adopts a split opening and closing structure. The biopsy forceps are composed of a plurality of biopsy forceps 20 evenly distributed at a certain angle around the circumference. Each biopsy forceps 20 is divided into front and rear The two parts are fixedly connected, the rear side is the elastic connection flap 21, and the front side is the clamp flap 22. The biopsy forceps is fixedly connected to the port of the biopsy forceps rod 3 through the elastic connecting flap 21, and the elastic connecting flap 21 of the biopsy forceps has elastic deformation characteristics. All the biopsy forceps 20 distributed in the circumference are uniformly opened to the outside, similar to the state of petal opening. The pincer flap 22 at the front end of the elastic connection flap 21 is elongated, and the edge 15 and the serrations 23 evenly arranged and distributed in the front and rear directions are designed on both sides of the pincer flap 22, and the front end of the pincer flap 22 is designed as an inward arc. The shape of the closed tip structure, and the cutting edge 15 respectively extends from the root of the two sides of the forceps flap 22 to the tip position. When the biopsy forceps is in the closed state, all the biopsy forceps blades 20 are elastically deformed into a cylindrical-like structure as a whole, the serrations 23 of the adjacent forceps flaps 22 can engage with each other, and the front tips of the forceps flaps 22 are close to the closed state. And during the closing process of the biopsy forceps, the serrations 23 with the cutting edges 15 on the adjacent forceps flaps 22 can perform oblique shearing with an included angle to each other during the closing process, ensuring that the biopsy tissue can be cut more easily. break away.

Wherein, the inner surface of the forceps flap 22 is provided with a barb 16, the front end port of the biopsy forceps rod 3 is provided with a helical wire fixing block 24, the front end of the helical wire fixing block 24 is connected with a helical wire 25, and the helical wire 25 Extends spirally towards the anterior side to the inside of the biopsy forceps.

A barb 16 is fixedly arranged on the inner surface of each forceps flap 22 , and the barb 16 has the same structure and function as the barb 16 on the inner side of the biopsy forceps forceps flap 14 in the first technical solution. A helix wire fixing block 24 is fixedly arranged inside the front end port of the biopsy forceps rod 3, and a helix wire 25 is fixedly connected to the front end of the helix wire fixing block 24. The helix wire 25 is spirally designed and extends toward the front side to the biopsy forceps. Inside, the front end of the helical twisted wire 25 is designed with a tapered tip. The twisted twisted wire 25 can easily penetrate into the biopsy tissue, and the helical structure can ensure that the biopsy tissue will not fall off after being pierced by the twisted twisted wire 25. , in conjunction with the hooking of the barbs 16 and the cutting of the serrations 23 and the cutting edge 15 when the forceps flap 22 is closed, it can ensure the smooth clamping of the biopsy tissue. A biopsy forceps rod sleeve 2 is sleeved outside the biopsy forceps rod 3, and the front end port of the biopsy forceps sleeve 4 is designed as an open structure. The open-ended port of the ® tightens the biopsy forceps so that they can be closed uniformly and synchronously. When the biopsy forceps rod 3 drives the biopsy forceps to move axially forward, the biopsy forceps is separated from the biopsy forceps casing 4, and the biopsy forceps can be elastically deformed and opened synchronously without external force, thereby facilitating the clamping of the biopsy tissue.

Among them, the biopsy forceps includes a blade-blade fixing tube 26 and a blade-blade 27 arranged on the blade-blade fixing tube 26; the rear part of the blade-blade 27 is a plane structure, and the edges on both sides are arc-shaped end face contours; the front part of the blade-blade 27 It is a warped semi-circular arc-shaped structure; the overall edge of the blade 27 is a smooth and smooth contour end edge, and the edge serrations 28 are arranged front and rear at the end edge; the internal position of the port of the blade fixing tube 26 is set There are 25 helical strands.

There is also a third technical solution for the biopsy forceps structure at the front end of the device. The puncture cannula 1 is covered with a blade fixing tube 26 , and a blade blade 27 is fixedly connected to the front end of the blade fixing tube 26 . The front and rear of the blade 27 are integrally fixed by two parts, the rear of the blade 27 is a plane structure, and the edges on both sides are arc-shaped end face contours, and the front of the blade 27 is a warped semi-circular arc blade structure , and the overall edge of the blade 27 is a smooth and smooth contour end edge, and the edge serrations 28 are evenly arranged in front and back at the end edge, which ensures that the blade 27 can be rotated when it contacts the interior of the lumen and the biopsy tissue. Biopsy tissue is cut and separated. A spiral twisted wire 25 is arranged inside the port of the blade fixing tube 26. The spiral twisted wire has the same structure as the internal helical twisted wire 25 of the second technical solution, and can be rotated into the biopsy tissue to avoid falling off. It can ensure that the rear part is cut flat and the front part is digging, and the biopsy tissue can be rotated and separated according to different situations. The spiral twisted wire 25 can be smoothly taken out after the biopsy tissue is cut.

Among them, an axial channel 29 is arranged in the puncture cannula seat 5 along the axial direction, and a bidirectional damping sleeve 6 is arranged in the axial channel 29. The bidirectional damping sleeve 6 adopts two valves 30 that are bidirectionally oriented and integrated; the auxiliary joint 7 is connected with a The suction pipe 31 is connected with a syringe 32; the port of the pressing groove 11 is provided with a stepped structure 33 that protrudes inward.

The operating part of the device is the hand-held control part on the rear side of the puncture cannula 1 . A puncture cannula seat 5 is fixedly connected to the rear end of the puncture cannula 1 . An axial channel 29 is arranged inside the puncture cannula seat 5 along the axial direction, the rear end of the biopsy forceps cannula 2 extends from the inside of the axial channel 29, and a bidirectional damping sleeve 6 is fixed in the larger inner diameter area of the axial channel 29, The two-way damping sleeve 6 adopts a valve 30 that is fixed in a two-way direction, and the two valves 30 act on the outer periphery of the biopsy forceps rod sleeve 2, which can play the role of two-way damping and limiting. The inside of the channel 29 plays a hermetic role. One side of the puncture cannula seat 5 is integrally fixed with an auxiliary joint 7 , through which a suction tube 31 can be connected, and the other end of the suction tube 31 is connected with a syringe 32 , which can be raised through the front end of the puncture cannula 1 . To the role of suction and injection, to prevent infection and inflammation of the biopsy area inside the lumen.

A biopsy forceps rod seat 8 is coaxially fixedly connected to the rear end of the biopsy forceps rod sleeve 2 , and a circular section pressing groove 11 with a certain depth is opened on the rear end face of the biopsy forceps rod seat 8 along the axial direction. The pressing head 9 can slide axially, and at the same time, an inwardly protruding step structure 33 is provided at the port of the pressing groove 11 to prevent the pressing head 9 from slipping out of the pressing groove 11 . A biopsy forceps rod 3 is sheathed inside the biopsy forceps rod sleeve 2 , the rear end of the biopsy forceps rod 3 extends to the inside of the pressing groove 11 , and the end of the biopsy forceps rod 3 is connected with the pressing head 9 , and the bottom surface of the groove inside the pressing groove 11 is A spring 10 is fixedly connected with the pressing head 9, and the spring 10 is always in a compressed state. When there is no external force, when the pressing head 9 is at the position of the port step structure 33 at the lower limit of the top support of the spring 10, the front end of the biopsy forceps rod 3 drives the biopsy forceps. It is closed at the 4 port of the biopsy forceps cannula. When the pressing head 9 is pressed, the spring 10 is further compressed, the biopsy forceps rod 3 drives the biopsy forceps to move forward, and the biopsy forceps elastically returns from the retracted state to the open state.

For the rear end operating handle of the third technical solution, the rear end of the blade fixing tube 26 can be fixedly provided with a conventional fixing operation handle, or the above-mentioned hand-held control part can be used, and the biopsy forceps rod 3 is connected with the blade fixing tube 26 .

The innovative technical points and beneficial effects of the present invention are at least as follows:

1. Compared with traditional laparoscopic surgery, the present invention adopts transvaginal puncture biopsy with smaller incision, and adopts the method of physical cutting to take biopsy for ovary. The damage is smaller and does not cause damage to the surrounding normal ovarian tissue. In addition, the device adopts a hood-shaped or helical structure helical twisted wire 25, which is twisted to prevent the biopsy tissue from falling off, which greatly enhances the stability. The invention designs a microscopic ovarian tissue biopsy device under the guidance of B-ultrasound, which can accurately locate the tissue biopsy under the guidance of ultrasound, is non-invasive to the patient, and minimizes the damage of the patient.

2. The auxiliary joint 7 provided on the side of the puncture cannula seat 5 can be connected to the syringe 32, and the front end of the puncture cannula 1 can be sucked and injected to achieve the integration of ovarian cyst puncture, suction, medicine and tissue biopsy. Complete multiple surgical operations at the same time, reduce trauma and improve timeliness.

3. In the first technical solution, the biopsy forceps adopts a shuttle-shaped pointed biopsy forceps flap 14 that can be elastically opened, and is provided with a cutting edge 15 at the end edge, so that the biopsy forceps can be cut by the cutting edge 15 in this technical solution. The method of grasping and separating the biopsy tissue, at the same time, the anterior fusiform tip can be inserted into the biopsy tissue for digging and cutting, which greatly improves the success rate. At the same time, with the hooking effect of the internal barb 16 structure, the biopsy tissue is further guaranteed The clipping success rate.

4. The second technical solution adopts a split structure, and the cutting edge 15 and sawtooth 23 on the end edge of the forceps flap 22 can cut the biopsy tissue, which can not only cut the tissue but also improve the clamping effect. The closed tip at the front end of the forceps flap 22 can facilitate the excavation of the biopsy tissue, and the structure of the spiral twisted wire 25 and the barb 16 can relatively fix the biopsy tissue block to be clamped, so that this structure can not only excavate Cutting can also ensure that no falling off occurs in the process of taking out, which greatly ensures the stability of the device.

5. The blade knife 27 of the third technical solution can cut the biopsy tissue by rotating and excavating because of the curved serrations 23 and the cutting edge 15 structure in the front part. Biopsy tissues of different shapes are easy to operate at the same time, and the incision can be completed by turning, which avoids the drawback of a large amount of bleeding due to the avulsion of the biopsy tissue during the traditional clipping. At the same time, the biopsy tissue block is fixed with the spiral twisted wire 25 and retrieved synchronously.

6. In the first technical solution, the structure of the guide ribs 17 provided with the biopsy forceps cooperates with the guide grooves 18 of the biopsy forceps sleeve 4, which can prevent the biopsy forceps from being skewed when expanding and contracting from the biopsy forceps sleeve 4 port, and ensures the stability of the device. sex.

7. The bidirectional damping sleeve 6 inside the biopsy forceps rod holder 8 is designed with a bidirectional valve 30 structure, which can not only perform a bidirectional emergency stop limit for the biopsy forceps rod casing 2, but also ensure the internal air tightness and prevent liquid leakage. , to ensure the stability of the device during use.

8. The elastic pressing structure at the rear end of the biopsy forceps rod sleeve 2 can make the biopsy forceps in a folded state when there is no external force. Compared with the normal state of the biopsy forceps, which is in an open state, the device can be pulled back and forth to facilitate the liberation of the doctor. The hands are folded and controlled, which improves the efficiency of the operation and reduces the physical exertion of the doctor.

9. The micro-ovarian tissue biopsy device of the present invention serves clinically for guiding diagnosis and treatment on the one hand, and serves scientific research and collects micro-ovarian tissue for basic research on the other hand.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a micro ovarian tissue biopsy device, is characterized in that, comprises: puncture casing, biopsy forceps rod casing, biopsy forceps rod, biopsy forceps casing, biopsy forceps, puncture casing seat, bidirectional damping sleeve, vice joint, Biopsy forceps rod holder, pressing head, spring; The puncture sleeve is sleeved with the biopsy forceps rod sleeve and the biopsy forceps sleeve which are connected, the biopsy forceps rod sleeve is sleeved with the biopsy forceps rod, and the biopsy forceps sleeve is sleeved with the biopsy forceps sleeve. There is the biopsy forceps; the biopsy forceps rod is connected with the biopsy forceps, and the biopsy forceps pierce the biopsy tissue and clamp it under the pushing of the biopsy forceps rod; The rear end of the puncture cannula is connected with the puncture cannula seat, the bidirectional damping sleeve and the auxiliary joint are arranged in the puncture cannula seat, and the biopsy forceps rod cannula is worn through the bidirectional The damping sleeve, the rear end of the biopsy forceps rod sleeve extending out of the puncture sleeve seat is connected to the biopsy forceps rod seat, the rear end of the biopsy forceps rod seat is provided with a pressing groove, and the pressing head is installed on the The spring is sleeved on the biopsy forceps rod and two ends abut the pressing head and the bottom surface of the pressing groove, respectively. 2. The microscopic ovarian tissue biopsy device according to claim 1, wherein the forceps detection sleeve is provided with a biopsy forceps groove axially from the front end, and the biopsy forceps are provided in the biopsy forceps groove. , the biopsy forceps includes a folded back piece and a biopsy forceps flap, the back folded piece adopts an arc-back folded structure in the middle section, and the back folded piece has elastic deformation characteristics; when there is no external force, the back folded piece is Both sides are in an elastically open state; both sides of the back-folded connecting piece are connected with the biopsy forceps flaps. 3. The microscopic ovarian tissue biopsy device according to claim 2, wherein the biopsy forceps flap is a hemi-shuttle type structure, the inside of the biopsy forceps flap has a concave curved surface structure, and the biopsy forceps The front end of the forceps flap is a sharp tip, the end edge of the concave curved surface structure on the biopsy forceps flap is provided with a sharp edge, and the two biopsy forceps forceps flaps form a shuttle shape as a whole when they are closed. 4 . The microscopic ovarian tissue biopsy device according to claim 3 , wherein a plurality of barbs are provided on the inner concave surface of the forceps flap of the biopsy forceps, and the barbs are inclined toward the rearward direction. 5 . 5. micro ovarian tissue biopsy device according to claim 2, is characterized in that, along the front and rear direction, the outer side surface of described folded contiguous piece both sides section is provided with the guide rib that protrudes to the outside, described biopsy forceps sleeve. The inner wall in the up-down direction of the biopsy forceps groove is provided with a guide groove that matches the convex section of the guide rib. 6 . The microscopic ovarian tissue biopsy device according to claim 2 , wherein a shift pin is provided along the left and right directions in the middle height position of the biopsy forceps groove near the notch. 7 . 7. The microscopic ovarian tissue biopsy device according to claim 1, wherein the biopsy forceps adopts a split-type opening and closing structure, and the biopsy forceps comprises several biopsy forceps that are angularly distributed around the circumference, and the biopsy forceps The sheet includes an elastic connection flap on the rear side and a forceps flap on the front side; the biopsy forceps is connected to the port of the biopsy forceps rod through the elastic connection flap; the elastic connection flap has elastic deformation characteristics, when the biopsy forceps When the pliers are not subjected to external force, the elastic connecting flaps are elastically opened to the outside; the pliers flaps are elongated, and both sides of the pliers flaps are provided with cutting edges and serrations arranged in the front and rear directions, so The front end of the forceps flap is set as a tip structure that is curved inwardly; when the biopsy forceps is in a closed state, all the biopsy forceps are elastically deformed as a whole into a cylindrical structure, and the serrations of the adjacent forceps flaps are mutually bite, and the front tip of the forceps flap is in a closed state. 8. The microscopic ovarian tissue biopsy device according to claim 7, wherein the inner surface of the forceps flap is provided with barbs, the front end port of the biopsy forceps rod is provided with a helical twisted wire fixing block, and the The front end of the helical wire fixing block is connected with a helical wire, and the helical wire extends spirally toward the front side to the inside of the biopsy forceps. 9. The device for microscopic ovarian tissue biopsy according to claim 1, wherein the biopsy forceps comprises a blade-blade fixing tube and a blade-blade arranged on the blade-blade fixing tube; the rear part of the blade blade is Plane structure, and the edges on both sides are arc-shaped end face contours; the front part of the blade is a warped semi-circular arc blade structure; the entire edge of the blade is a smooth and smooth contour end edge, at the end edge Front and rear serrations are arranged at the front and rear; the inner position of the port of the blade fixing tube is provided with a spiral twisted wire. 10. The microscopic ovarian tissue biopsy device according to claim 1, characterized in that, an axial channel is provided in the inside of the puncture cannula seat along the axial direction, and the inside of the axial channel is provided with the bidirectional damping sleeve, so The two-way damping sleeve adopts two valves that are integrated in two directions; the auxiliary joint is connected with a suction tube, and the suction tube is connected with a syringe; the port of the pressing groove is provided with an inwardly protruding step structure.

Images