A puncture forceps biopsy needle used under bronchoscopy
By designing a bronchoscopic puncture clamping biopsy needle that combines nested structures of puncture needles and biopsy forceps, the problem of insufficient sample size of tissue specimens obtained under the bronchoscopic and inability to penetrate the biopsy forceps head, improving diagnosis and patient safety, achieving efficient diagnosis of mediastinal lesions.
Patent Information
- Application Number
- CN201910689298.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-07-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2039-07-29
AI Technical Summary
In the prior art, when obtaining tissue specimens under a bronchoscopy, the sample size of needle aspiration biopsy is small, which is difficult to meet the multiple immunohistochemistry pathological diagnosis needs. The head end of the biopsy forceps is blunt and cannot penetrate the ventricular wall, and it is impossible to perform internal mediastinal biopsy, resulting in Low diagnostic rates and increased patient discomfort.
Design a puncture forceps clamping biopsy needle used under bronchoscopy. Combining the structure of the puncture needle and biopsy forceps, the nesting of the puncture and biopsy forceps can be achieved through the nesting structure of the tensile wire and slider, which can accurately puncture and capture tissue samples. , enhance operation flexibility and accuracy.
It realizes tracheal needle aspiration biopsy and clamp biopsy on the same device, which improves the sample sampling volume, reduces misdiagnosis and misdiagnosis, reduces the patient's discomfort and bleeding risks, and improves diagnostic efficiency and safety.
Smart Images
Figure CN110477968B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of medical instruments, and in particular relates to a puncture forceps biopsy needle used under a bronchoscope. Background Art
[0002] At present, with the development of bronchoscopic technology, transbronchial needle aspiration (TBNA) and biopsy forceps clamp biopsy have become important means of obtaining tissue specimens for clear diagnosis under bronchoscopy. The TBNA needle can penetrate the tracheal wall and is mostly used for puncture of enlarged mediastinal lymph nodes, while the latter is mostly used to directly clamp the lesion tissue in the trachea under the microscope. However, the sample volume obtained by needle aspiration biopsy is small, especially for benign lesions with tough tissue properties, which usually only have cytological results, which is difficult to meet the current development trend of pathological diagnosis based on multiple immunohistochemistry. In order to obtain tissue, puncture can only be performed repeatedly, which significantly increases the patient's discomfort and the risk of bleeding. The amount of tissue sample obtained by biopsy forceps clamp biopsy is large, but the tip of the biopsy forceps is blunt and cannot penetrate the tracheal wall and cannot reach the mediastinum for biopsy. Therefore, there is an urgent need for a device that has the advantages of both TBNA needles and biopsy forceps to improve the diagnosis rate of mediastinal lesions, especially benign mediastinal lesions. Summary of the invention
[0003] In order to solve the problems existing in the prior art, the present invention provides a puncture forceps biopsy needle used under bronchoscope, which is reasonably designed and easy to operate, has the advantages of both a puncture needle and a biopsy forceps, and can improve the diagnosis rate of mediastinal lesions.
[0004] The present invention provides a puncture forceps biopsy needle used under bronchoscope, which is composed of an outer sleeve 1, a connecting wire 2, a pull ring 3, a slider 4, a slide groove 5, a spiral sleeve 6, a spiral interface 7, a slide handle 8, a puncture needle slider 9, a biopsy forceps slider 10, a spring 11, a tension wire 12, a slot 13, a puncture needle 14, a biopsy forceps head 15, a biopsy forceps foot 16, a pull cable 17, and a scissor-fork structure 18. Among them, one end of the tension wire 12 is hinged with the biopsy forceps to control the opening and closing of the biopsy forceps by changing the tension, and the other end is hinged with the slider 4 to change the position of the biopsy forceps by changing the position of the slider. At the same time, a small hole is set in the center of the puncture needle slider 9 and the biopsy forceps slider 10 for the tension wire 12 to pass through; one end of the connecting wire 2 is hinged with the puncture needle 14, and the other end is hinged with the puncture needle slider 9. There is a small hole in the biopsy forceps slider 10 for the connecting wire to pass through. The puncture needle slider 9 and the biopsy forceps slider 10 can both move on the slide handle 8. A card slot 13 is set 20mm behind the original position of the puncture needle slider 9 to accommodate the puncture needle slider 9 after the position is changed, so as to realize the position change of the puncture needle slider 9. The spring 11 is hinged with the puncture needle slider 9, and expands and contracts as the position of the slider 4 on the slide handle 8 changes, so as to realize the reversible change of the puncture needle position. The slide groove 5 accommodates the slider 4 for the slider 4 to move. The spiral sleeve 6 is rigidly connected (welded) to the outer sleeve 1 and is spirally connected to the spiral interface 7. The outer sleeve 1 can be extended and retracted by rotating the spiral sleeve 6. The head end of the biopsy forceps 15 is 5mm away from the tip of the puncture needle, and the biopsy forceps is 12mm long. One end of the tension wire 12 is hinged with the slider 4, and the other end is hinged with the biopsy forceps. The biopsy forceps consists of two biopsy forceps heads 15 and two biopsy forceps feet 16. The biopsy forceps heads are hinged with the biopsy forceps feet, and the two biopsy forceps feet 16 are fixed to the tension wire 12 by cables 17. The scissor-fork structure 18 for controlling the opening and closing of the biopsy forceps 15 is composed of the following structures: the cable 17 is hinged with the tension wire 12; one end of the cable 17 is hinged with the tension wire, and the other end is hinged with the biopsy forceps foot 16; when the tension wire 12 is subjected to tension, the cable 17 is pulled, and the cable 17 pulls the biopsy forceps foot, and the biopsy forceps head and the biopsy forceps foot are linked, and the position change of the biopsy forceps foot causes the position change of the biopsy forceps head, thereby realizing the opening and closing of the biopsy forceps. When the slider 4 moves toward the pull ring 3, the biopsy forceps head 15 opens, and vice versa, it closes. The biopsy forceps 15 is 21G, and the puncture needle 14 is 19G. The angle of the biopsy forceps after being fully opened is about 15-45 degrees. The biopsy forceps are made of titanium alloy.
[0005] When in use, the outer sleeve can be retracted by rotating the spiral sleeve 6 and the spiral interface 7 toward the handle end. At this time, the puncture needle sleeve is extended under the microscope and the tip can be seen. Figure 3 At this time, there is a 5mm gap between the biopsy forceps and the tip of the puncture needle to accommodate tissue, and transbronchial needle aspiration biopsy can be performed. Move the slider 9 to the slot 13, compress the spring, retract the puncture needle, and expose the biopsy forceps. At this time, the position structure is as follows Figure 4 . Figure 4In this state, the operator can operate the slider 4 to move it backward, and the cable 17 hinged with the tension wire 12 becomes tense, pulling the biopsy forceps to open, and then push the slider 4 forward to close the biopsy forceps cup, thereby completing the clamp biopsy.
[0006] Compared with the prior art, the present invention has the following advantages and effects: first, through the nested structure of the puncture needle and the biopsy forceps, direct puncture can be performed, and the biopsy forceps can be accurately delivered into the mediastinal lesion through the puncture needle, so that two operations of transbronchial needle aspiration biopsy and transbronchial clamp biopsy can be realized on the same device, which increases the flexibility of operation, improves the accuracy of operation, increases the sampling amount of samples, and greatly reduces misdiagnosis and missed diagnosis caused by insufficient tissue sample volume; second, by reducing the number of puncture operations, the patient's discomfort is greatly reduced and the patient's safety is improved. The present invention has a reasonable design, convenient operation, and efficient diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a basic structural schematic diagram of the present invention.
[0008] Figure 2 This is a schematic diagram of the partially enlarged structure of the puncture forceps clamping the biopsy needle.
[0009] Figure 3 It is a schematic diagram of the structure of the present invention when performing TBNA puncture.
[0010] Figure 4 It is a schematic diagram of the structure of the present invention when performing clamp biopsy. DETAILED DESCRIPTION
[0011] The present invention is further described in conjunction with the accompanying drawings and embodiments.
[0012] Example 1: A puncture forceps biopsy needle used under bronchoscopy
[0013] See also Figure 1 , Figure 2A puncture forceps biopsy needle used under bronchoscope, consisting of an outer sleeve 1, a connecting wire 2, a pull ring 3, a slider 4, a slide groove 5, a spiral sleeve 6, a spiral interface 7, a slide handle 8, a puncture needle slider 9, a biopsy forceps slider 10, a spring 11, a tension wire 12, a slot 13, a puncture needle 14, a biopsy forceps 15, a scissor-fork structure 16, and a pull cable 17. Among them, one end of the tension wire 12 is hinged with the biopsy forceps 15, and the opening and closing of the biopsy forceps is controlled by the change of tension. The other end is hinged with the slider 4, and the position of the biopsy forceps is changed by the change of the slider position. At the same time, a small hole is set in the center of the puncture needle slider 9 and the biopsy forceps slider 10 for the tension wire 12 to pass through; one end of the connecting wire 2 is hinged with the puncture needle 14, and the other end is hinged with the puncture needle slider 9. There is a small hole in the biopsy forceps slider 10 for the connecting wire to pass through. The puncture needle slider 9 and the biopsy forceps slider 10 can both move on the slide handle 8. A card slot 13 is set 20mm behind the original position of the puncture needle slider 9 to accommodate the puncture needle slider 9 after the position is changed, so as to realize the position change of the puncture needle slider 9. The spring 11 is hinged with the puncture needle slider 9, and expands and contracts as the position of the slider 4 on the slide handle 8 changes, so as to realize the reversible change of the puncture needle position. The slide groove 5 accommodates the slider 4 for the slider 4 to move. The spiral sleeve 6 is rigidly connected (welded) to the outer sleeve 1 and is spirally connected to the spiral interface 7. The outer sleeve 1 can be extended and retracted by rotating the spiral sleeve 6. The head end of the biopsy forceps 15 is 5mm away from the tip of the puncture needle, and the biopsy forceps is 12mm long. One end of the tension wire 12 is hinged with the slider 4, and the other end is hinged with the biopsy forceps. The biopsy forceps consists of two biopsy forceps heads 15 and two biopsy forceps feet 16. The biopsy forceps heads are hinged with the biopsy forceps feet, and the two biopsy forceps feet 16 are fixed to the tension wire 12 by cables 17. The scissor-fork structure 18 for controlling the opening and closing of the biopsy forceps 15 is composed of the following structures: the cable 17 is hinged with the tension wire 12; one end of the cable 17 is hinged with the tension wire, and the other end is hinged with the biopsy forceps foot 16; when the tension wire 12 is subjected to tension, the cable 17 is pulled, and the cable 17 pulls the biopsy forceps foot, and the biopsy forceps head and the biopsy forceps foot are linked, and the position change of the biopsy forceps foot causes the position change of the biopsy forceps head, thereby realizing the opening and closing of the biopsy forceps. When the slider 4 moves toward the pull ring 3, the biopsy forceps head 15 opens, and vice versa, it closes. The biopsy forceps 15 is 21G, and the puncture needle 14 is 19G. The angle of the biopsy forceps after being fully opened is about 15-45 degrees. The biopsy forceps are made of titanium alloy.
[0014] Example 2: Transbronchial needle aspiration biopsy under conventional bronchoscope
[0015] During routine bronchoscopy, the biopsy needle Figure 1 In this state, the puncture needle is inserted into the airway through the working channel of the ordinary bronchoscope, the puncture point is found, and the spiral sleeve 6 at the handle end is rotated to match the spiral interface 7, thereby retracting the outer sleeve and exposing the puncture needle. Figure 3The puncture needle penetrates the bronchial wall and enters the designated lesion. At this time, there is a 5mm gap between the biopsy forceps and the tip of the puncture needle to accommodate tissue, and transbronchial needle aspiration biopsy can be performed. After the needle aspiration biopsy is completed, the slider 9 is moved to the card slot 13, the spring is compressed, the puncture needle is retracted, and the biopsy forceps are exposed. At this time, the position structure is as follows Figure 4 At this time, the biopsy forceps is equivalent to the inner core of the puncture needle, which pushes the punctured tissue out of the needle, thereby obtaining the puncture specimen and completing the transbronchial needle aspiration biopsy.
[0016] Example 3: Transbronchial clamp biopsy under ordinary bronchoscope
[0017] During routine bronchoscopy, the biopsy needle Figure 1 In this state, the puncture needle is inserted into the airway through the working channel of the ordinary bronchoscope, the puncture point is found, and the spiral sleeve 6 at the handle end is rotated to match the spiral interface 7, thereby retracting the outer sleeve and exposing the puncture needle. Figure 3 After the puncture needle penetrates the bronchial wall and enters the designated lesion, the slider 9 is moved to the slot 13, the spring is compressed, the puncture needle retracts, and the biopsy forceps are exposed. At this time, the position structure is as follows Figure 4 . Figure 4 In this state, the operator can operate the slider 4 to move it backward, and the cable 17 hinged with the tension wire 12 becomes tense, pulling the biopsy forceps to open, and then push the slider 4 forward to close the biopsy forceps cup, thereby completing the clamp biopsy.
[0018] Example 4: Transbronchial clamp biopsy under ultrasound bronchoscopy
[0019] During bronchoscopy, the biopsy needle Figure 1 In this state, the bronchoscope is inserted into the airway through the working channel, ultrasound is activated, and the target lesion is located. The spiral sleeve 6 at the handle end is rotated to match the spiral interface 7, thereby retracting the outer sleeve and exposing the puncture needle ( Figure 3 ). Under the real-time guidance of ultrasound, the puncture needle penetrates the bronchial wall and enters the designated lesion. At this time, there is a 5mm gap between the biopsy forceps and the tip of the puncture needle to accommodate tissue, and transbronchial needle aspiration biopsy can be performed. After the needle aspiration biopsy is completed, the slider 9 is moved to the slot 13, the spring is compressed, the puncture needle is retracted, and the biopsy forceps are exposed. At this time, the position structure is as shown Figure 4 At this time, the biopsy forceps are equivalent to the inner core of the puncture needle, pushing the punctured tissue out of the needle, thereby obtaining the puncture specimen and completing the transbronchial needle aspiration biopsy. If the needle aspiration biopsy cannot obtain a satisfactory specimen, the slider 9 can be moved back to the initial position, the spring is relaxed, and the puncture needle automatically returns to its original position ( Figure 3 ), so that after completing the second puncture into the lesion under ultrasound guidance, the slider 9 is moved to the slot 13 behind the initial position, the spring is compressed, the puncture needle is retracted, and the biopsy forceps are exposed. At this time, the position structure is as follows Figure 4, move the slider 9 to the rear of the initial position and the slot 13, compress the spring, retract the puncture needle, and expose the biopsy forceps. At this time, the position structure is as follows Figure 4 The operator can operate the slider 4 to move backward, and the cable 17 hinged with the tension wire 12 becomes tense, pulling the biopsy forceps to open, and then push the slider 4 forward to close the biopsy forceps cup, thereby completing the clamp biopsy under ultrasound guidance.
Claims
1. A puncture forceps biopsy needle used under bronchoscopy, characterized in that: The invention comprises an outer sleeve (1), a connecting wire (2), a pull ring (3), a slider (4), a slide groove (5), a spiral sleeve (6), a spiral interface (7), a slide handle (8), a puncture needle slider (9), a biopsy forceps slider (10), a spring (11), a tension wire (12), a slot (13), a puncture needle (14), a biopsy forceps head (15), a biopsy forceps foot (16), a pull cable (17), and a scissor-fork structure (18), wherein one end of the tension wire (12) is hinged with the biopsy forceps to control the opening and closing of the biopsy forceps by changing the tension force, and the other end is hinged with the slider (4) to change the position of the slider The position of the biopsy forceps is changed, and at the same time, a small hole is provided in the center of the puncture needle slider (9) and the biopsy forceps slider (10) for the tension wire (12) to pass through; one end of the connecting wire (2) is hinged with the puncture needle (14), and the other end is hinged with the puncture needle slider (9); a small hole is provided in the biopsy forceps slider (10) for the connecting wire to pass through; the puncture needle slider (9) and the biopsy forceps slider (10) can both move on the slide handle (8); a slot (13) is provided 20 mm behind the original position of the puncture needle slider (9); the spring (11) is hinged with the puncture needle slider (9), and expands and contracts as the position of the slider (4) on the slide handle (8) changes. The spiral sleeve (6) is rigidly connected to the outer sleeve (1) and spirally connected to the spiral interface (7). One end of the tension wire (12) is hinged to the slider (4), and the other end is hinged to the biopsy forceps. The biopsy forceps consists of two biopsy forceps heads (15) and two biopsy forceps feet (16). The biopsy forceps heads (15) are hinged to the biopsy forceps feet (16), and the two biopsy forceps feet (16) are fixed to the tension wire (12) by a cable (17). The puncture needle slider (9) is connected to the puncture needle (14) via a connecting steel wire (2) to enable the sliding handle (8) to move upward; The pull cable (17), the tension wire (12) and the biopsy forceps foot (16) together form a scissor-fork structure (18) for controlling the opening and closing of the biopsy forceps. The pull cable (17) is hinged with the tension wire (12); one end of the pull cable (17) is hinged with the tension wire (12), and the other end is hinged with the biopsy forceps foot (16); when the tension wire (12) is subjected to tension, the pull cable (17) is pulled, and the pull cable (17) pulls the biopsy forceps foot, and the biopsy forceps head and the biopsy forceps foot are linked, and the position change of the biopsy forceps foot causes the position change of the biopsy forceps head, thereby realizing the opening and closing of the biopsy forceps; The biopsy forceps are 21G, the puncture needle (14) is 19G, and the angle of the biopsy forceps when fully opened is 15-45 degrees; Rotating the spiral sleeve (6) to extend and retract the outer sleeve (1); The tip of the biopsy forceps (15) is 5 mm away from the tip of the puncture needle, and the biopsy forceps is 12 mm long.
2. The puncture forceps biopsy needle used under bronchoscopy according to claim 1, characterized in that: The biopsy forceps are made of titanium alloy.