Rotary cutting biopsy device under endoscope

Abstract

The rotary cutting biopsy device under the endoscope comprises a biopsy tube body composed of a tip part and a control part, the control part is hollow, the two ends of the control part are open, the tip part is hollow, one end of the control part is open, the open end of the tip part is communicated with one end of the control part, and a rotary cutting groove is formed in the side wall of the tip part; the cutting tool bit is slidably arranged between the tip portion inner cavity and the control portion inner cavity, one end of the connecting piece is connected with the cutting tool bit, and the other end of the connecting piece penetrates out of the control portion to be fixed to the handle and used for driving the connecting piece and the cutting tool bit to slide. A guide part is arranged on the outer wall of the tip part, and a guide wire is detachably arranged in the guide part. According to the rotary-cut biopsy device under the endoscope, tumor tissues and cells with larger area and better quality can be obtained through rotary-cut sampling, the situation that an endoscope instrument repeatedly enters and exits from a forceps pipeline is reduced, the endoscope diagnosis and treatment time is shortened, the pain of a patient is relieved, and the nidus biopsy area and quality of digestive tract tumors or occupied patients are improved.

Description

Technical Field

[0001] The utility model relates to an endoscopic rotary cutting biopsy device, belonging to the technical field of medical equipment. Background Art

[0002] In recent years, with the continuous improvement of the treatment level of tumor diseases, the continuous optimization and improvement of immunotherapy, targeted therapy, radiotherapy, chemotherapy, surgical therapy, etc., gene sequencing examination has become one of the must-test items for most tumor patients. Therefore, the quality of the pathological tissue of tumor patients and the size of the sampling area are particularly important. In the process of endoscopic diagnosis and treatment, if better and more excellent lesion tissue can be excised or sampled, it will not only be of great help to the diagnosis of tumor patients, but also reduce the pain and economic losses caused by repeated examinations due to unsatisfactory sampling. It is beneficial for tumor patients to do further genetic testing and help them find gene mutations and corresponding targeted drugs. Therefore, there is an urgent need for an endoscopic excision biopsy device to assist clinical endoscopists in excising or sampling more and better lesion tissues under endoscopy, but there is currently no such device in clinical practice. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing endoscopic biopsy device has a small sampling volume due to factors such as the device angle, the contact area of ​​the biopsy forceps, and the exposure of tumor growth. Therefore, it is impossible to ensure that more high-quality lesion tissues can be obtained at one time, resulting in low detection efficiency and the possibility of requiring multiple excisions, which brings pain to patients.

[0004] In order to solve the above technical problems, the utility model provides an endoscopic excision biopsy device, which can assist endoscopists in sampling lesion tissues with larger body surface area and better quality when performing excision and biopsy of lesion tissues of patients with gastrointestinal tumors or space-occupying masses.

[0005] In order to achieve the above technical objectives and the above technical effects, this application is implemented through the following technical solutions:

[0006] An endoscopic rotary biopsy device comprises a biopsy tube body, the biopsy tube body comprises a tip end and a control part, the control part is hollow and has two ends open, the tip end is hollow and has one end open, the open end of the tip end is connected to one end of the control part, a rotary cutting groove is formed on the side wall of the tip end, and the rotary cutting groove is connected to the inner cavity of the tip end;

[0007] It also includes a cutting head, a handle and a connecting piece, wherein the cutting head is slidably arranged between the inner cavity of the tip portion and the inner cavity of the control portion, one end of the connecting piece is connected to the cutting head, and the other end passes through the end of the control portion away from the tip portion and is fixed to the handle, and the handle is used to drive the connecting piece and the cutting head to slide.

[0008] Preferably, the cutting blade head is a high-frequency electric knife, and a high-frequency workstation interface is provided on the handle, and the high-frequency workstation interface is electrically connected to the cutting blade head through the connecting piece.

[0009] Preferably, the cutting head is hollow and open at one end, the connecting piece is a hollow tube with openings at both ends, the open end of the cutting head is connected to one end of the connecting piece, a biopsy groove matched with the rotary cutting groove is provided on the outer wall of one side of the cutting head, the biopsy groove is connected to the inner cavity of the cutting head, the inner wall of the biopsy groove is blade-shaped, and a specimen recovery component connected to the connecting piece is provided on the handle.

[0010] Furthermore, the specimen recovery component includes a cross joint and a suction syringe, the cross joint is arranged on the handle and is connected to the connecting piece, and the suction syringe is connected to the cross joint.

[0011] Preferably, a guide portion is provided on the outer wall of the tip portion, a guide side hole is provided on a side of the guide portion facing the control portion, and a guide wire is detachably provided in the guide side hole.

[0012] Furthermore, the length of the guide portion is between 1 and 3 cm.

[0013] The utility model provides an endoscopic rotary biopsy device, which has the following advantages:

[0014] 1. The utility model endoscopic rotary cutting biopsy device can use a high-frequency electric knife as a cutting blade, can simultaneously perform pathological tissue sampling and cut surface hemostasis under endoscopy, can also use a guide wire to explore and guide the endoscopic instrument to reach the deep part of the tumor tissue, so as to rotary cut or sample tumor tissue and cells with a larger area and better quality. After the rotary cutting is completed, the cutting blade head is pulled out by the connecting piece driven by the handle to achieve tissue recovery; at the same time, a hollow cutting blade head with a biopsy groove on the side can be used, and a specimen recovery device can be provided on the handle, which can be quickly recovered after the rotary cutting is completed, so as to reduce the repeated entry and exit of the endoscopic instrument in the forceps pipeline, shorten the endoscopic diagnosis and treatment time, relieve the patient's pain, improve the biopsy area and quality of the lesion of patients with gastrointestinal tumors or space-occupying masses, and provide a clinical diagnostic basis for the formulation of subsequent treatment plans and the evaluation of treatment effects.

[0015] 2. The utility model endoscopic rotary cutting biopsy device has high clinical operability, practicality and feasibility, and has a relatively simple structure, which is conducive to production and clinical application promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axial schematic diagram of the overall structure of an endoscopic rotary biopsy device, which mainly embodies the first embodiment of the utility model;

[0017] Figure 2This is an axial schematic diagram of the overall structure of an endoscopic rotary biopsy device, which is mainly embodied in the second embodiment of the utility model;

[0018] In the figure:

[0019] 1-biopsy tube body; 11-tip end; 111-rotating cutting groove; 12-control part; 2-cutting head; 3-handle; 4-connector; 5-high-frequency workstation interface; 6-guide part; 61-guide side hole; 7-guide wire; 8-biopsy groove; 9-specimen recovery component; 91-cross joint; 92-suction syringe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical personnel in the field without creative work are within the scope of protection of the present utility model.

[0021] Embodiment 1:

[0022] Reference Figure 1 An endoscopic rotary cutting biopsy device includes a biopsy tube body 1, which includes a tip portion 11 and a control portion 12. Specifically, the control portion 12 is a hollow plastic round tube with openings at both ends, and the tip portion 11 is a hollow plastic round tube with an opening at one end. The tip portion 11 and the control portion 12 are integrally injection molded, and the open end of the tip portion 11 is connected to one end of the control portion 12. A rotary cutting groove 111 is provided on the side wall of the tip portion 11, and the rotary cutting groove 111 is connected to the inner cavity of the tip portion 11. When performing a biopsy operation, medical staff can rotate the control portion 12 to drive the tip portion 11 to rotate. When the rotary cutting groove 111 is aligned with the tumor or space-occupying tissue, the next cutting operation can be performed.

[0023] Reference Figure 1 , an endoscopic rotary cutting biopsy device, further comprising a cutting blade head 2, a handle 3 and a connecting piece 4, the cutting blade head 2 being slidably installed between the inner cavity of the tip end portion 11 and the inner cavity of the control portion 12. In this embodiment, the connecting piece 4 is cylindrical as a whole and is penetrated in the control portion 12, one end of the connecting piece 4 is connected to the cutting blade head 2, and the other end passes through the end of the control portion 12 away from the tip end portion 11 and is fixed to the handle 3, the handle 3 is used to drive the connecting piece 4 and the cutting blade head 2 to slide, when performing a biopsy operation, the medical staff first pulls the cutting blade head 2 into the cavity of the control portion 12 through the handle 3 and the connecting piece 4, and then aligns the tip end portion 11 with the tumor or space-occupying tissue so that the tumor or space-occupying tissue enters the cavity of the tip end portion 11 through the rotary cutting groove 111, and then pushes the cutting blade head 2 toward the direction close to the tip end portion 11 through the handle 3 and the connecting piece 4, so that cutting and collection can be achieved.

[0024] Reference Figure 1 In a further embodiment, the cutting head 2 is a high-frequency electric knife, the connecting piece 4 is a cable, and a high-frequency workstation interface 5 is installed on the handle 3 for connecting to an external high-frequency workstation. The high-frequency workstation interface 5 is electrically connected to the cutting head 2 through the connecting piece 4. In this embodiment, the use of the high-frequency electric knife and the connection with the high-frequency workstation are prior arts and will not be elaborated on. The cutting head 2 uses a high-frequency electric knife to achieve tissue cutting and collection, and can also perform hemostasis and electrocoagulation on the lesion wound on the rotary cutting surface, which can further reduce the patient's pain.

[0025] Reference Figure 1 In a further embodiment, a guide portion 6 is integrally formed on the outer wall of the tip portion 11, the guide portion 6 is arranged along the axial direction of the tip portion 11 and has a length between 1 and 3 cm, a guide side hole 61 is opened on the side of the guide portion 6 facing the control portion 12, and a guide wire 7 is detachably inserted and installed in the guide side hole 61. The biopsy tube body 1 is a plastic tube, which is difficult to insert into the human body and the direction is not well controlled. The biopsy tube body 1 can be guided into the human body by the setting of the guide portion 6 and the guide wire 7, and at the same time, the endoscopic instrument can be explored and guided to reach the deep part of the tumor tissue, so as to cut or sample tumor tissue and cells with larger area and better quality.

[0026] Embodiment 2:

[0027] Reference Figure 2 The difference between this embodiment and the first embodiment is that the cutting head 2 is an ordinary cutting knife, the cutting head 2 is hollow and one end is open, the connecting piece 4 is a hollow tube with two ends open, the open end of the cutting head 2 is fixed and connected to one end of the connecting piece 4, a biopsy groove 8 adapted to the rotary cutting groove 111 is provided on the outer wall of one side of the cutting head 2, the biopsy groove 8 is connected to the inner cavity of the cutting head 2, the side wall of the biopsy groove 8 is blade-shaped, and a specimen recovery component 9 connected to the connecting piece 4 is installed on the handle 3.

[0028] In a further embodiment, the specimen recovery component 9 includes a cross joint 91 and a suction syringe 92. The cross joint 91 is inserted and fixed on the handle 3 and connected to the connecting piece 4. The suction syringe 92 is plugged into the cross joint 91. When performing a biopsy, the biopsy slot 8 on the cutting head 2 is moved to align with the rotary cutting slot 111 of the tip 11 through the handle 3, and then the biopsy slot 8 is rotated to align with the tumor or space-occupying tissue, so that the tumor or space-occupying tissue enters the inner cavity of the cutting head 2 through the biopsy slot 8. Finally, the cutting head 2 is pushed to move by the handle 3 and the tissue is cut through the inner wall of the biopsy slot 8. After the cutting is completed, the cut tissue is sucked into the syringe by pulling out the suction syringe 92 to achieve rapid collection.

[0029] Furthermore, the cross connector 91 can also be connected to a flushing device for flushing, and the suction syringe 92 can also be replaced with a pump-type suction device. This is existing technology and will not be described in detail.

[0030] The steps of using the endoscopic rotary biopsy device of the utility model are as follows:

[0031] (1) After reaching the lesion of a patient with a digestive tract tumor or space-occupying lesion through endoscopic examination or surgery, the device is inserted into the endoscopic biopsy forceps channel. After reaching the digestive tract tumor or space-occupying lesion, the handle 3 at the rear of the instrument controls the opening direction of the rotary cutting groove 111 on the tip 11, and the opening direction of the rotary cutting groove 111 is directed toward the tumor or space-occupying tissue. The handle 3 controls the cutting head 2 to move forward to cut and sample the lesion tissue.

[0032] (2) If a patient has a digestive tract tumor or a mass that is difficult to biopsy with conventional biopsy forceps, after the endoscope reaches the surgical site, the yellow zebra guide wire 7 is first used for intubation. After the intubation is successful, the guide wire 7 is retained and fixed, and the device is exchanged to the tumor site through the guide side hole 61 of the main body guide wire 7. Then, the pathological tissue is excised and biopsied as in step (1) above.

[0033] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. An endoscopic rotary biopsy device, characterized in that: The biopsy tube body (1) comprises a tip portion (11) and a control portion (12), wherein the control portion (12) is hollow and has two ends open, and the tip portion (11) is hollow and has one end open, the open end of the tip portion (11) is connected to one end of the control portion (12), and a rotary cutting groove (111) is provided on the side wall of the tip portion (11), and the rotary cutting groove (111) is connected to the inner cavity of the tip portion (11); It also comprises a cutting head (2), a handle (3) and a connecting piece (4); the cutting head (2) is slidably arranged between the inner cavity of the tip end portion (11) and the inner cavity of the control portion (12); one end of the connecting piece (4) is connected to the cutting head (2), and the other end passes through the end of the control portion (12) away from the tip end portion (11) and is fixed to the handle (3); the handle (3) is used to drive the connecting piece (4) and the cutting head (2) to slide.

2. An endoscopic rotary biopsy device according to claim 1, characterized in that: The cutting blade head (2) is a high-frequency electric knife, and a high-frequency workstation interface (5) is provided on the handle (3), and the high-frequency workstation interface (5) is electrically connected to the cutting blade head (2) via the connecting piece (4).

3. The endoscopic rotary biopsy device according to claim 1, characterized in that: The cutting blade (2) is hollow and has an open end. The connecting piece (4) is a hollow tube with two open ends. The open end of the cutting blade (2) is connected to one end of the connecting piece (4). A biopsy groove (8) adapted to the rotary cutting groove (111) is provided on an outer wall of one side of the cutting blade (2). The biopsy groove (8) is connected to the inner cavity of the cutting blade (2). The inner wall of the biopsy groove (8) is blade-shaped. A specimen recovery component (9) connected to the connecting piece (4) is provided on the handle (3).

4. An endoscopic rotary biopsy device as claimed in claim 3, characterized in that: The specimen recovery component (9) comprises a cross joint (91) and a suction syringe (92); the cross joint (91) is arranged on the handle (3) and is connected to the connecting piece (4); the suction syringe (92) is connected to the cross joint (91).

5. The endoscopic rotary biopsy device according to claim 1, characterized in that: A guide portion (6) is provided on the outer wall of the front end portion (11), and a guide side hole (61) is provided on the side of the guide portion (6) facing the control portion (12), and a guide wire (7) is detachably provided in the guide side hole (61).

6. An endoscopic rotary biopsy device according to claim 5, characterized in that: The length of the guide portion (6) is between 1 and 3 cm.

Images