Puncture device
By designing a puncture device for myocardial resection, the problem of difficult to predict the resection range and great surgical trauma in traditional myocardial resection is solved, precise fixation of hypertrophic tissues and reducing surgical complications, improving the operation Safety and effectiveness.
Patent Information
- Application Number
- CN202323191431.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-11-23
AI Technical Summary
Traditional interventricular septal myocardial resection is performed in a state of cardiac arrest. The range of resection is difficult to predict, which may lead to ventricular septal perforation or conduction beam damage, and the resection effect cannot be evaluated in real time. The surgical trauma is great, and existing auxiliary puncture fixation devices are lacking.
A puncture device is designed, including a catheter, a puncture needle and an operating part. The puncture needle can be moved through the length of the catheter and is equipped with an operating mechanism to facilitate medical staff to manually puncture and fix the hypertrophic tissue. There is a storage groove and a negative pressure hole at the distal end of the catheter. To assist in organization storage and fixation.
The device can effectively fix the growing hypertrophic tissue in the human body, support more precise resection and reduce surgical trauma, and improve surgical safety and effectiveness.
Smart Images
Figure CN222265355U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical devices, in particular to a puncture device for treating hypertrophic tissue growing in a human body. Background Art
[0002] Hypertrophic obstructive cardiomyopathy is a disease of abnormal myocardial morphology. The cause of the disease may be related to gene mutation, abnormal myocardial calcium dynamics and increased secretion of catecholamines. The pathological manifestations of this disease are asymmetric ventricular septal hypertrophy, hypertrophic myocardium protruding into the left ventricle, resulting in a reduction in left ventricular volume, a significant increase in the left ventricular outflow tract pressure gradient, mitral valve systolic anterior movement (SAM sign) and further aggravation of left ventricular outflow tract obstruction, leading to obstruction of left ventricular blood discharge and progressive deterioration of cardiac function. The clinical symptoms of this disease are mainly chest pain, dyspnea, syncope and other symptoms of heart failure. The annual mortality rate without treatment is 1.7% to 4%, mostly sudden death caused by malignant arrhythmias, and the natural prognosis is poor.
[0003] The treatments for anterior hypertrophic obstructive cardiomyopathy mainly include drug therapy, dual-chamber pacing therapy, transcoronary septal alcohol ablation and open septal myocardectomy (Morrow procedure and modified Morrow procedure). Among them, drug and dual-chamber pacing therapy can only reduce myocardial oxygen consumption and relieve heart failure symptoms to a certain extent, and enhance the patient's exercise tolerance, but cannot fundamentally eliminate the cause, so the treatment effect is limited. Alcohol ablation injects anhydrous alcohol into the first septal branch of the left anterior descending coronary artery, causing partial myocardial infarction, thinning the basal segment of the hypertrophic ventricular septum, and achieving etiological treatment of reducing hypertrophic obstruction and reducing pressure gradient. However, this method still has great limitations: ① It may cause myocardial infarction in non-target areas, resulting in abnormal myocardial motion and aggravating the condition; ② Due to myocardial scar formation, complications such as atrioventricular block and ventricular arrhythmia are highly prevalent (about 10%); ③ Due to the variation of the first septal branch, about 5% to 8% of patients are not suitable for alcohol ablation; ④ Both short-term and long-term efficacy are inferior to open septal myectomy; ⑤ It cannot treat mitral papillary muscle deformity and concurrent valve structural abnormalities. In addition, a few heart centers have tried to perform septal radiofrequency ablation through percutaneous catheters, but due to the large number of complications, it has not been widely used. Therefore, septal myectomy is still the best treatment for hypertrophic obstructive cardiomyopathy.
[0004] However, traditional ventricular septal myectomy still faces many challenges and problems: ① Since the resection is performed when the heart is stopped, the thickness and texture of the heart are different from those of the beating heart. The resection range is difficult to assess before surgery and depends entirely on the surgeon's experience. Therefore, only a very small number of experienced heart centers can perform this surgery relatively well, making it difficult to promote; ② After resection, the resection effect cannot be assessed in real time. If the resection range is too wide, it may cause ventricular septal perforation and conduction bundle damage, while incomplete resection leads to poor surgical efficacy; ③ Surgical trauma, myocardial damage and systemic inflammatory response caused by median thoracotomy, open heart surgery and extracorporeal circulation. Therefore, the surgical method of ventricular septal myectomy still needs to be improved.
[0005] Myocardial resection requires puncture and fixation of the myocardial tissue to be removed before resection, so that medical staff can remove or treat the punctured or unpunctured myocardial tissue. Currently, there is no special device to assist in puncturing and fixing myocardial tissue. Utility Model Content
[0006] Based on this, the embodiment of the utility model discloses at least one puncture device. The puncture device includes a catheter, a puncture needle and an operating unit; the distal end of the puncture needle is disposed in the catheter; the proximal end of the puncture needle is connected to the operating unit; a storage groove is configured on the distal side of the catheter, and the operating unit drives the distal end of the puncture needle to pass through the storage groove along the length direction of the catheter.
[0007] In some embodiments disclosed in the present utility model, the operating part includes a handle, a connecting rod and an operating mechanism; the handle is connected to the catheter; the operating mechanism is installed on the handle; the operating mechanism drives the puncture needle through the storage groove along the length direction of the catheter through the connecting rod.
[0008] In some embodiments disclosed in the present utility model, the operating mechanism includes a push button; the handle is connected to the catheter; the push button is movably connected to the handle along the length direction of the catheter; the distal end of the connecting rod is connected to the proximal end of the puncture needle in the catheter, and the proximal end is connected to the push button.
[0009] In some embodiments disclosed in the present utility model, the operating mechanism includes a button middle piece; the proximal end of the connecting rod is connected to the push button through the button middle piece.
[0010] In some embodiments disclosed in the utility model, the operating mechanism includes a rotating handle, a screw and a connecting piece; the rotating handle is rotatably connected to the handle; the proximal end of the screw rotates coaxially with the rotating handle; one end of the connecting piece is connected to the proximal end of the puncture needle, and the other end is threadedly connected to the screw.
[0011] In some embodiments disclosed in the present utility model, the operating mechanism includes a pushing gear and a pushing rack; the pushing gear is rotatably connected to the handle; the pushing rack is connected to the proximal end of the puncture needle along the length direction of the puncture needle; the pushing gear is meshed with the pushing rack.
[0012] In some embodiments disclosed in the present utility model, the distal end of the puncture needle is configured as an inclined needle tip.
[0013] In some embodiments disclosed in the present utility model, the receiving groove is configured as an inwardly recessed arc-shaped groove.
[0014] In some embodiments disclosed in the present utility model, the operating portion includes a moving block; the operating mechanism drives the puncture needle to pass through the receiving groove along the length direction of the catheter through the connecting rod and the moving block in sequence.
[0015] In some embodiments disclosed in the present utility model, the distal end of the catheter is configured with at least one negative pressure hole, the negative pressure hole is connected to a negative pressure pipeline, and the negative pressure pipeline is connected to an external negative pressure generating device.
[0016] Compared with the prior art, the puncture device of the utility model can manually puncture and fix the hypertrophic tissue in the human body, so as to support medical staff to complete the treatment of the hypertrophic tissue.
[0017] In view of the above-mentioned solutions, the present invention describes the exemplary embodiments disclosed in detail below with reference to the accompanying drawings, so that other features and advantages of the embodiments of the present invention are also made clear. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of the structure of the puncture device in Example 1;
[0020] Figure 2 It is a cross-sectional schematic diagram of the puncture device of Example 1;
[0021] Figure 3 for Figure 2 A magnified schematic diagram of part A;
[0022] Figure 4 It is a cross-sectional schematic diagram of the puncture device of Example 2;
[0023] Figure 5 is a cross-sectional schematic diagram of the puncture device of Example 3;
[0024] The accompanying drawings are marked with: 10, puncture needle; 11, moving block; 12, connecting rod; 20, catheter; 21, storage groove; 30, handle; 31, button; 32, button middle piece; 40, negative pressure pipe; 41, negative pressure hole; 51, rotating handle; 52, screw; 53, connecting piece; 531, trimming nut; 61, push gear; 62, push rack. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0026] This embodiment discloses a puncture device, which is used to attach and puncture a part of a tissue that grows and hypertrophies in a human body to support treatment activities on the growing and hypertrophic tissue. For example, the puncture device is used to attach and puncture a part of a myocardial hypertrophy tissue in a heart cavity to support medical staff to complete the removal of the myocardial hypertrophy tissue.
[0027] Embodiment 1
[0028] Figure 1 A schematic structural diagram of a puncture device according to the first embodiment is shown.
[0029] Figure 1 The puncture device is shown to include a catheter 20, a puncture needle 10 and an operating unit. The catheter 20 is used to receive a portion of myocardial hypertrophy tissue, the puncture needle 10 is deployed in the catheter 20 and can puncture the received portion of myocardial hypertrophy tissue, and the operating unit is used to drive the puncture needle 10 to complete the puncture of the portion of myocardial hypertrophy tissue.
[0030] Figure 2 A cross-sectional schematic diagram of the puncture device of the first embodiment is shown. Figure 3 Show Figure 2 An enlarged schematic diagram of part A.
[0031] Figure 2The catheter 20 is a hollow hard pipe structure, and a receiving groove 21 is configured on the distal side of the catheter 20. When the receiving groove 21 faces the myocardial hypertrophy tissue, it touches and squeezes the tissue, so that part of the myocardial hypertrophy tissue can enter the catheter 20 through the receiving groove 21.
[0032] Preferably, the receiving groove 21 is constructed as an inwardly concave arc-shaped groove, which can better receive part of the tissue of myocardial hypertrophy.
[0033] Furthermore, Figure 2 It is shown that the distal end of the catheter 20 is constructed with a plurality of negative pressure holes 41 , and the plurality of negative pressure holes 41 are respectively connected to a negative pressure pipe 40 , and the negative pressure pipe 40 is connected to an external negative pressure generating device.
[0034] Preferably, the negative pressure pipe 40 is a closed pipeline constructed along the length direction on the outer periphery of the catheter 20. The negative pressure pipe 40 extends into the handle 30 along the length direction of the catheter 20 and is connected to the catheter 20 of the negative pressure generating device in the operating part.
[0035] Figure 2 It is shown that the proximal end of the puncture needle 10 is connected to a moving block 11 disposed in the catheter 20 , and the moving block 11 is displaced along the length direction of the catheter 20 . The proximal end of the puncture needle 10 is connected to the moving block 11 , and the moving block 11 is driven by the operating unit.
[0036] Figure 2 The operating part is shown to include a handle 30, a connecting rod 12 and an operating mechanism. The handle 30 is connected to the catheter 20. The operating mechanism is installed on the handle 30. The operating mechanism includes a push button 31, a button middle piece 32 and a connecting rod 12. The handle 30 is connected to the catheter 20 through the push button 31 along the length direction of the catheter 20. The distal end of the connecting rod 12 is connected to the moving block 11 in the catheter 20, and the proximal end is connected to the push button 31 through the button middle piece 32.
[0037] Based on this, when the puncture device of Embodiment 1 is used to intervene in the human body, the medical staff adjusts the angle of the handle 30 to bring the distal end of the catheter 20 close to the hypertrophic tissue. The medical staff then turns the handle 51 so that the storage groove 21 can touch and squeeze and / or negatively pressurize the part of the hypertrophic tissue attached. When the storage groove 21 contains part of the hypertrophic tissue, the medical staff pushes the push button 31 toward the proximal end. During the pushing process, the push button 31 causes the puncture needle 10 to move toward the distal end of the catheter 20 through the transmission of the button middle piece 32, the connecting rod 12 and the moving block 11. During the displacement process toward the distal end of the catheter 20, the puncture needle 10 punctures the part of the hypertrophic tissue stored in the storage groove 21.
[0038] Then, after the medical staff completes the partial puncture and fixation of the growing hypertrophic tissue by using the puncture device, they can complete the partial resection of the growing hypertrophic tissue outside and / or inside the catheter 20 by using the cutting instrument.
[0039] Embodiment 2
[0040] The second embodiment has an operating mechanism that is different from that of the first embodiment.
[0041] Figure 4 A cross-sectional schematic diagram of the puncture device of the second embodiment is shown.
[0042] Figure 4 The operating mechanism is shown to include a rotating handle 51, a screw rod 52 and a connecting member 53. The rotating handle 51 is rotatably connected to the proximal end of the handle 30. The proximal end of the screw rod 52 is coaxially fixed with the rotating handle 51. The upper end of the connecting member 53 is fixedly connected to the proximal end of the puncture needle 10, and the lower end is configured as a trimming nut 531, which is threadedly connected to the screw rod 52. The end surface of the trimming nut 531 touches the inside of the handle 30, so that the trimming nut 531 can and can only move along the length direction of the puncture needle 10.
[0043] Based on this, when the puncture device of the second embodiment is used, the medical staff rotates the handle 51 to make the screw 52 rotate synchronously with the handle 51. The rotation of the screw 52 causes the trimming nut 531 to move along the length direction of the puncture needle 10. The movement of the trimming nut 531 is transmitted to the puncture device through the connecting member 53, so that the puncture needle 10 can move toward the distal end of the catheter 20.
[0044] Embodiment 3
[0045] The third embodiment has an operating mechanism that is different from that of the first embodiment.
[0046] Figure 5 A cross-sectional schematic diagram of the puncture device of the third embodiment is shown.
[0047] Figure 5 The operating mechanism is shown to include a push gear 61 and a push rack 62. The push gear 61 is rotatably connected to the handle 30. The push rack 62 is connected to the proximal end of the puncture needle 10 along the length direction of the puncture needle 10. The push gear 61 is meshed with the push rack 62.
[0048] Based on this, when the puncture device of the third embodiment is used, the medical staff rotates the push gear 61 to synchronously move the rack along the length direction, and when the rack moves, the puncture needle 10 can be synchronously moved toward the distal end of the catheter 20.
[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A puncture device, characterized in that: The puncture device includes a catheter, a puncture needle and an operating part; The distal end of the puncture needle is disposed in the catheter; The proximal end of the puncture needle is connected to the operating part; A receiving groove is configured on the distal end side surface of the catheter, and the operating unit drives the distal end of the puncture needle to pass through the receiving groove along the length direction of the catheter.
2. The puncture device according to claim 1, characterized in that: The operating part includes a handle, a connecting rod and an operating mechanism; The handle is connected to the catheter; The operating mechanism is mounted on the handle; The operating mechanism drives the puncture needle to pass through the receiving groove along the length direction of the catheter through the connecting rod.
3. The puncture device according to claim 2, characterized in that: The operating mechanism includes a push button; The handle is connected to the catheter; The push button is movably connected to the handle along the length direction of the catheter; The distal end of the connecting rod is connected to the proximal end of the puncture needle in the catheter, and the proximal end is connected to the push button.
4. The puncture device according to claim 3, characterized in that: The operating mechanism includes a button middle piece; The proximal end of the connecting rod is connected to the push button through the button intermediate piece.
5. The puncture device according to claim 2, characterized in that: The operating mechanism includes a rotating handle, a screw rod and a connecting piece; The rotating handle is rotatably connected to the handle; The proximal end of the screw rotates coaxially with the rotating handle; One end of the connecting piece is connected to the proximal end of the puncture needle, and the other end is threadedly connected to the screw rod.
6. The puncture device according to claim 4, characterized in that: The operating mechanism includes a pushing gear and a pushing rack; The pushing gear is rotatably connected to the handle; The pushing rack is connected to the proximal end of the puncture needle along the length direction of the puncture needle; The pushing gear is meshed with the pushing rack.
7. The puncture device according to claim 1, characterized in that: The distal end of the puncture needle is configured as an inclined needle tip.
8. The puncture device according to claim 1, characterized in that: The receiving groove is configured as an inwardly recessed arc groove.
9. The puncture device according to claim 6, characterized in that: The operating part includes a moving block; The operating mechanism drives the puncture needle to pass through the receiving groove along the length direction of the catheter through the connecting rod and the moving block in sequence.
10. The puncture device according to claim 1, characterized in that: The distal end of the catheter is configured with at least one negative pressure hole, the negative pressure hole is connected to a negative pressure pipeline, and the negative pressure pipeline is connected to an external negative pressure generating device.