Cardiothoracic surgery puncture outfit with stable puncture force
By designing a highly stable external tube assembly and a quick-change connection mechanism, the problems of unstable puncture force and cumbersome operation of traditional cardiothoracic puncture devices have been solved, achieving efficient and safe puncture surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-27
- Publication Date
- 2026-03-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional cardiothoracic surgical puncture instruments are unstable in terms of puncture force control, leading to puncture failure or tissue damage. In addition, the surgical procedure is cumbersome and requires multiple people to work together to change surgical tools, which reduces efficiency.
A puncture device comprising an external tube assembly, a puncture assembly, a connecting mechanism, a grasping forceps assembly, and an endoscope assembly was designed. Through the combination of anti-slip corrugations, limiting grooves, and spring plates, stable insertion and rapid replacement of the puncture needle are achieved, and single-person operation is enabled through the connecting mechanism.
It improves the stability and accuracy of puncture, reduces surgical steps, increases puncture efficiency and safety, and avoids the omission and damage of medical instruments.
Smart Images
Figure CN121647784A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical puncture equipment technology, specifically relating to a cardiothoracic surgical puncture device with stable puncture force. Background Technology
[0002] A cardiothoracic puncture device is a precision surgical instrument used for puncturing the heart, major blood vessels, or key structures in the thoracic cavity, primarily in minimally invasive cardiovascular interventional procedures. Its core function is to penetrate tissue in a controlled, precise, and minimally invasive manner under image guidance to establish a working channel for diagnosis (e.g., pericardial effusion sampling) or treatment (e.g., atrial septostomy, aortic valve replacement). Traditional puncture procedures heavily rely on the operator's feel and experience, facing the common challenge of unstable puncture force: insufficient force may lead to puncture failure or tissue slippage; a sudden increase in force can easily trigger an uncontrolled "breakthrough," causing serious complications such as vessel wall penetration damage, cardiac tamponade, or nerve damage. Especially when dealing with tissues in different pathological states (e.g., calcification, fibrosis, or weak areas), the dynamic response of force is crucial. Therefore, "stable puncture force" is the core performance pursuit of this device, referring to its ability to achieve stable application and precise control of force throughout the entire puncture process (from tissue contact to breakthrough), avoiding instantaneous peaks and fluctuations, thereby maximizing surgical safety, predictability, and operational standardization.
[0003] Currently, when performing puncture surgery on patients, a puncture needle and catheter are first inserted, and then the puncture needle is removed. Medical staff can then use medical instruments to introduce the catheter to perform the puncture surgery. However, throughout the process, medical staff need to use different surgical tools back and forth, and multiple medical staff need to pass and change them, which increases the complexity of the surgical process and greatly reduces the efficiency of puncture. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a cardiothoracic surgical puncture device with stable puncture force.
[0005] The technical solution adopted to solve the above technical problems is: a cardiothoracic surgical trocar with stable puncture force, including an outer tube assembly, a puncture component installed inside the outer tube assembly, and a connecting mechanism installed at one end of the outer tube assembly;
[0006] One end of the connecting mechanism is equipped with a gripping forceps assembly, and the other end of the connecting mechanism is equipped with an endoscope assembly. The endoscope assembly facilitates precise puncture by the puncture assembly, thereby enabling rapid and accurate sampling or treatment of lesions.
[0007] Furthermore, the outer tube assembly includes a sheath, one end of which is fixedly connected to an outer tube body. One end of the outer wall of the outer tube body is provided with anti-slip corrugations, and the other end of the outer tube body is provided with multiple circular grooves. Each of the multiple circular grooves is fixedly connected with a rubber sleeve. The sheath is provided with two limiting grooves. The front and rear ends of the sheath are respectively provided with through holes near the limiting grooves. The front and rear ends of the sheath are respectively fixedly connected with first spring plates near the through holes. The inner end faces of the two first spring plates are fixedly connected with compression blocks. The inner top of the sheath is provided with a drainage groove, and the top of the sheath is fixedly connected with a rubber head near the drainage groove.
[0008] Using the above technical solution, medical staff can push the outer tube body and puncture component into the skin by holding the tube sheath. When the outer tube body is inserted, it becomes a safe and fixed channel for infusion. The syringe is inserted into the rubber head, and the medicine flows into the puncture component through the drainage groove, and then into the area to be treated. When the outer tube body is inserted into the skin to a certain depth, the anti-slip ripples improve the friction effect with the flesh, thereby preventing the outer tube body from slipping and improving the stability during the operation. Two limiting grooves and two through holes facilitate the assembly of the puncture component with it, enabling rapid assembly.
[0009] Furthermore, the puncture assembly includes a puncture needle disposed inside the outer tube body. One end of the puncture needle is fixedly connected to a fixing plate. A second spring plate is fixedly connected to both the front and rear ends of one side of the fixing plate. Limiting blocks are fixedly connected to both of the two second spring plates. A drainage hole is provided at one end of the top of the puncture needle.
[0010] With the above technical solution, when a patient needs a puncture procedure, the patient holds the tubing sheath and pushes it to insert the puncture needle into the skin to the specific location. When medication needs to be injected, a syringe is inserted into the rubber head and the medication is pushed in, allowing the medication to be injected into the puncture needle through the drainage groove and through-hole, and then delivered to the designated location from the puncture needle. There is no need to introduce other needles; the medication is injected directly through the syringe connection. This method is highly functional, reduces the number of steps for medical staff to change instruments, and improves the efficiency of puncture procedures.
[0011] Furthermore, in the combined state, the two second spring sheets are located in the corresponding limiting grooves, and the two limiting blocks are in contact with the inner wall of the corresponding through holes.
[0012] With the above technical solution, when quickly assembling the puncture assembly and the outer tube assembly, the puncture needle is inserted into the outer tube body, and two second spring plates are inserted into the corresponding limiting grooves. When the fixing plate is pushed a certain distance, the two limiting blocks are inserted into the corresponding through holes, thereby locking the entire fixing plate and stably assembling the puncture needle and the outer tube body. When the puncture needle needs to be disassembled, medical staff squeeze the two first spring plates, thereby squeezing the two squeezing blocks. The two squeezing blocks squeeze the corresponding limiting blocks through the corresponding through holes, causing the two limiting blocks to separate from the corresponding through holes. At this time, the staff pulls the fixing plate to quickly remove the puncture needle, achieving rapid disassembly and facilitating subsequent disinfection.
[0013] Furthermore, in the combined state, the drainage hole is aligned with the drainage groove.
[0014] The above technical solution allows the syringe to deliver medication into the puncture needle through the drainage hole and drainage groove, and finally into the specific location requiring treatment via the puncture needle.
[0015] Furthermore, the connecting mechanism includes a connecting seat, one end of which is fixedly connected to a plurality of fixed posts, and the interior of the connecting seat is provided with a plurality of sliding grooves.
[0016] With the above technical solution, when assembling endoscope components, medical staff insert multiple endoscope components into the puncture needle, and at the same time insert multiple fixing posts into the corresponding rubber sleeves, thereby stably assembling the connector and the sheath, and ensuring a reliable connection.
[0017] Furthermore, in the combined state, the plurality of fixing posts are respectively inserted into the corresponding rubber sleeves.
[0018] The above technical solution allows multiple rubber sleeves to be interference-fitted with corresponding fixing posts, increasing the connection friction between the fixing posts and the rubber sleeves, thereby improving the connectivity between the connecting mechanism and the endoscope assembly. Simultaneously, the connecting mechanism is connected to both ends of a grasping forceps assembly and an endoscope assembly, allowing medical personnel to quickly change the medical instruments needed during the puncture procedure. When puncturing the skin with the puncture assembly, the connecting mechanism, in conjunction with the endoscope assembly, quickly assembles the external tube assembly and the puncture assembly. When it is necessary to grasp a lesion, the connecting mechanism, in conjunction with the grasping forceps assembly, quickly assembles the external tube assembly and the puncture assembly. This can be operated by a single medical professional without the need for an assistant to change instruments, greatly improving puncture efficiency.
[0019] Furthermore, the gripper assembly includes multiple return springs, one end of each return spring is fixedly connected to a slide bar, the other end of each slide bar is fixedly connected to a connecting ring, the inner wall of the connecting ring is rotatably connected to a threaded sleeve, the other end of the threaded sleeve is fixedly connected to a connecting post, the other end of the connecting post is fixedly connected to an instrument rod, the other end of the instrument rod is fixedly mounted with the gripper body, and a plastic tube is fixedly connected to the center of the inner wall of the connecting seat.
[0020] With the above technical solution, after puncture of the patient, when it is necessary to grasp the lesion, the grasping forceps body extends near the lesion. Medical staff pull the threaded sleeve, which pulls the connecting column, which in turn pulls the instrument rod, which in turn pulls the grasping forceps body. Because the grasping forceps body is elastic, when it is pulled back into the plastic tube, the grasping forceps body clamps, thus gripping the lesion. Pulling the connecting mechanism again removes the lesion. When the tension on the threaded sleeve is released, the instrument rod resets via multiple slide bars, which in turn reset via multiple return springs, facilitating the grasping of the next lesion. Medical staff can adjust the angle of the grasping forceps body according to the shape of the lesion. Since the threaded sleeve is rotatably connected to the connecting ring, rotating the threaded sleeve drives the instrument rod to rotate, which in turn drives the grasping forceps body to rotate, thus changing the angle of the grasping forceps body. This facilitates quick and easy grasping of lesions and improves the efficiency of puncture surgery.
[0021] Furthermore, the plurality of reset springs are fixedly connected to one end of the corresponding slide groove, the plurality of slide bars are slidably connected to the corresponding slide groove, and the instrument rod is located inside the plastic tube.
[0022] With the above technical solution, when assembling the grasping forceps assembly and the puncture assembly, pulling the threaded sleeve causes the grasping forceps body to be in a clamping state, which facilitates the quick insertion of the grasping forceps body into the puncture needle. When one end of the instrument rod and the grasping forceps body pass through the puncture needle and the connecting seat is in contact with one end of the tube sheath, quick assembly is achieved, which facilitates the subsequent grasping of the lesion.
[0023] Furthermore, the endoscope assembly includes a threaded post, with a guide tube fixedly connected to the other end of the threaded post and a lens fixedly connected to the other end of the guide tube. In the assembled state, the threaded post is threadedly connected to the corresponding threaded sleeve, and both the guide tube and the lens are located inside the puncture needle.
[0024] With the above technical solution, when performing puncture surgery on patients, the endoscope component needs to be assembled with the puncture component first. After assembly, the specific puncture location can be observed through the lens, allowing medical staff to directly see the target while using the puncture component to perform the most precise puncture operation, improving the accuracy of puncture, avoiding incorrect placement, and reducing the pain caused to patients during puncture surgery. Furthermore, the threaded column and threaded sleeve are connected by threads, which facilitates subsequent assembly and disassembly with the grasping forceps component and facilitates subsequent disinfection of the endoscope component. At the same time, the assembly of the two prevents the medical device from being missed when not in use.
[0025] The beneficial effects of the present invention are as follows: (1) The present invention, through the design of the connecting mechanism, the gripping forceps assembly and the endoscope assembly, allows for quick replacement of the gripping forceps assembly and the endoscope assembly during use. Furthermore, it can be operated by a single medical staff member without the need for an assistant to assist in changing the instruments, preventing the medical instruments from falling during the transfer of medical instruments, reducing the number of surgical steps, and thus improving the efficiency of puncture surgery; (2) The present invention, through the design of the outer tube assembly, allows the syringe to be inserted into the rubber head and push the medicine, so that the medicine is injected into the puncture needle through the drainage groove and the through hole, and then sent to the designated position from the puncture needle. There is no need to introduce other needle tubes, and the injection is directly connected through the syringe. It has strong functionality, reduces the number of steps for medical staff to change instruments, and improves the efficiency of puncture surgery. Attached Figure Description
[0026] Figure 1 This is an overall appearance drawing of the present invention;
[0027] Figure 2 This is the overall front view of the present invention;
[0028] Figure 3 This is a first-view sectional view of the present invention;
[0029] Figure 4 This is a second-perspective sectional view of the present invention;
[0030] Figure 5 This is a cross-sectional view of the external tube assembly, puncture assembly, and endoscope assembly of the present invention;
[0031] Figure 6 This is a schematic diagram of the outer tube assembly structure of the present invention;
[0032] Figure 7 This is a schematic diagram of the puncture assembly structure of the present invention;
[0033] Figure 8 This is a schematic diagram of the outer tube assembly and puncture assembly of the present invention;
[0034] Figure 9 This is a schematic diagram of the connection mechanism, endoscope assembly, and gripper assembly of the present invention;
[0035] Figure 10 This is a cross-sectional view of the connection mechanism of the present invention;
[0036] Figure 11 This is a schematic diagram of the structure of some parts of the gripper assembly of the present invention;
[0037] Figure 12 This is a schematic diagram of the endoscope assembly structure of the present invention;
[0038] Figure 13 for Figure 3 A magnified view of a section at point A in the middle;
[0039] Figure 14 for Figure 3 A magnified view of a section at point B in the middle;
[0040] Figure 15 for Figure 4 A magnified view of a section at point C;
[0041] Figure 16 for Figure 5 A magnified view of a section at point D;
[0042] Figure 17 for Figure 5 A magnified view of a section at point E in the middle.
[0043] Reference numerals: 1. Outer tube assembly; 101. Tube sheath; 102. Outer tube body; 103. Anti-slip corrugations; 104. Circular groove; 105. Rubber sleeve; 106. Limiting groove; 107. Through hole; 108. First spring plate; 109. Extrusion block; 110. Drainage groove; 111. Rubber head; 2. Puncture assembly; 201. Puncture needle; 202. Fixing plate; 203. Second spring plate; 204. Limiting block 205. Drainage hole; 3. Connecting mechanism; 301. Connecting seat; 302. Fixing post; 303. Slide groove; 4. Gripper assembly; 401. Return spring; 402. Slide bar; 403. Connecting ring; 404. Threaded sleeve; 405. Connecting post; 406. Instrument rod; 407. Gripper body; 408. Plastic tube; 5. Endoscope assembly; 501. Threaded post; 502. Guide tube; 503. Lens. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0045] like Figures 1-17As shown, a cardiothoracic puncture device with stable puncture force according to this embodiment includes an outer tube assembly 1, which includes a sheath 101. One end of the sheath 101 is fixedly connected to an outer tube body 102. One end of the outer wall of the outer tube body 102 is provided with anti-slip corrugations 103. The other end of the outer tube body 102 is provided with multiple circular grooves 104. Rubber sleeves 105 are fixedly connected to each of the multiple circular grooves 104. The sheath 101 is provided with two limiting grooves 106. Through holes 107 are provided at the front and rear ends of the sheath 101 near the limiting grooves 106. First spring plates 108 are fixedly connected at the front and rear ends of the sheath 101 near the through holes 107. Compression blocks 109 are fixedly connected to the inner end faces of the two first spring plates 108. The inner top of the sheath 101 is opened... A drainage groove 110 is provided, and a rubber head 111 is fixedly connected to the top of the sheath 101 near the drainage groove 110. Medical staff can push the outer tube body 102 and the puncture component 2 into the skin by holding the sheath 101. When the outer tube body 102 is inserted, it becomes a safe and fixed channel for infusion. The medicine flows into the puncture component 2 through the drainage groove 110 and then into the area to be treated by inserting a syringe into the rubber head 111. When the outer tube body 102 is inserted into the skin to a certain depth, the anti-slip ripples 103 improve the friction effect with the flesh, thereby preventing the outer tube body 102 from sliding and improving the stability during the operation. Two limiting grooves 106 and two through holes 107 facilitate the assembly of the puncture component 2 with it, realizing rapid assembly.
[0046] like Figures 1-15As shown, a puncture assembly 2 is installed inside the outer tube assembly 1. The puncture assembly 2 includes a puncture needle 201 disposed inside the outer tube body 102. One end of the puncture needle 201 is fixedly connected to a fixing plate 202. A second spring plate 203 is fixedly connected to both the front and rear ends of one side of the fixing plate 202. Limiting blocks 204 are fixedly connected to both second spring plates 203. A drainage hole 205 is opened at the top end of the puncture needle 201. When a puncture operation is required on the patient, the sheath 101 is held and pushed, thereby driving the puncture needle 201 to be inserted into the skin for puncture. When medication needs to be injected at a specific location, a syringe is inserted into the rubber head 111, and the medication is pushed through the drainage groove 110 and through hole 107 into the puncture needle 201. The medication is then advanced from the puncture needle 201 to the designated location. No other needles are needed; the medication is injected directly through the syringe connection. This highly functional approach reduces the number of instrument changes required by medical staff, improving the efficiency of puncture procedures. In the combined state, the two second spring plates 203 are located within their corresponding limiting grooves 106, and the two limiting blocks 204 are within their corresponding through holes 107. When quickly assembling the puncture assembly 2 and the outer tube assembly 1, the puncture needle 201 is inserted into the outer tube body 102. Simultaneously, two second spring plates 203 are inserted into the corresponding limiting grooves 106. Pushing the fixing plate 202 a certain distance causes the two limiting blocks 204 to insert into the corresponding through holes 107, thereby locking the entire fixing plate 202 in place. This ensures stable assembly of the puncture needle 201 and the outer tube body 102. When the puncture needle 201 needs to be disassembled, medical personnel squeeze the two first spring plates 108, thereby squeezing the two squeezing blocks 109. This causes the two squeezing blocks 109 to squeeze the corresponding limiting blocks 204 through the corresponding through holes 107, causing the two limiting blocks 204 to separate from the corresponding through holes 107. At this time, the staff pulls the fixing plate 202 to quickly remove the puncture needle 201, achieving quick disassembly and facilitating subsequent disinfection. In the combined state, the drainage hole 205 is aligned with the drainage groove 110, allowing the syringe to deliver the medicine into the puncture needle 201 through the drainage hole 205 and the drainage groove 110, and finally deliver it to the specific location that needs treatment through the puncture needle 201.
[0047] like Figures 1-17As shown, a connecting mechanism 3 is installed at one end of the outer tube assembly 1. The connecting mechanism 3 includes a connecting seat 301, and a plurality of fixing posts 302 are fixedly connected to one end of the connecting seat 301. A plurality of sliding grooves 303 are opened inside the connecting seat 301. When the endoscope assembly 5 needs to be assembled, the medical staff inserts the plurality of endoscope assemblies 5 into the puncture needle 201, and at the same time inserts the plurality of fixing posts 302 into the corresponding rubber sleeves 105, thereby stably assembling the connecting seat 301 and the sheath 101, and ensuring a reliable connection. In the assembled state, the plurality of fixing posts 302 are respectively inserted into the corresponding rubber sleeves 105, so that the plurality of rubber sleeves 105 and the corresponding fixing posts 302 are press-fitted. The connection mechanism 3 enhances the connection friction between the fixed post 302 and the rubber sleeve 105, thereby improving the connectivity between the connection mechanism 3 and the endoscope assembly 5. Simultaneously, the connection mechanism 3 is connected to the grasping forceps assembly 4 and the endoscope assembly 5 at both ends, allowing medical personnel to quickly change the medical instruments needed during the puncture procedure. When puncturing the skin through the puncture assembly 2, the connection mechanism 3, in conjunction with the endoscope assembly 5, quickly assembles with the outer tube assembly 1 and the puncture assembly 2. When it is necessary to grasp a lesion, the connection mechanism 3, in conjunction with the grasping forceps assembly 4, quickly assembles with the outer tube assembly 1 and the puncture assembly 2. This can be operated by a single medical staff member without the need for an assistant to change instruments, greatly improving puncture efficiency.
[0048] like Figures 1-17As shown, a gripper assembly 4 is installed at one end of the connecting mechanism 3. The gripper assembly 4 includes multiple return springs 401. One end of each return spring 401 is fixedly connected to a slide bar 402. The other end of each slide bar 402 is fixedly connected to a connecting ring 403. A threaded sleeve 404 is rotatably connected to the inner wall of the connecting ring 403. A connecting post 405 is fixedly connected to the other end of the threaded sleeve 404. An instrument rod 406 is fixedly connected to the other end of the connecting post 405. A gripper body 407 is fixedly installed at the other end of the instrument rod 406. The center of the inner wall of the connecting seat 301 is fixed. Connected to the plastic tube 408, when it is necessary to grasp the lesion after puncture of the patient, the grasping forceps body 407 extends near the lesion. Medical personnel pull the threaded sleeve 404, causing the threaded sleeve 404 to pull the connecting post 405, which in turn pulls the instrument rod 406. The instrument rod 406 then pulls the grasping forceps body 407. Because the grasping forceps body 407 is elastic, when it is pulled back into the plastic tube 408, the end of the grasping forceps body 407 clamps, thus grasping the lesion. Then, the connecting mechanism 3 is pulled to remove the lesion, thus canceling the connection to the threaded tube. When the threaded sleeve 404 is pulled, the instrument rod 406 resets via multiple slide bars 402, which in turn resets via multiple return springs 401, facilitating the grasping of the next lesion. Medical staff can adjust the angle of the grasping forceps body 407 according to the shape of the lesion. Because the threaded sleeve 404 is rotatably connected to the connecting ring 403, rotating the threaded sleeve 404 drives the instrument rod 406 to rotate, which in turn drives the grasping forceps body 407 to rotate, thus changing the angle of the grasping forceps body 407. This facilitates quick and easy grasping of lesions, improving the efficiency of the puncture surgery. The multiple return springs 401 are respectively connected to… One end of the corresponding slide groove 303 is fixedly connected, and multiple slide bars 402 are slidably connected to the corresponding slide groove 303 respectively. The instrument rod 406 is located inside the plastic tube 408. When it is necessary to assemble the grasping forceps assembly 4 and the puncture assembly 2, pull the threaded sleeve 404 to drive the grasping forceps body 407 into a clamping state, so that the grasping forceps body 407 can quickly extend into the puncture needle 201. When one end of the instrument rod 406 and the grasping forceps body 407 pass through the puncture needle 201, and the connecting seat 301 is attached to one end of the tube sheath 101, quick assembly is achieved, which facilitates the subsequent grasping of the lesion.
[0049] like Figures 1-15As shown, the other end of the connecting mechanism 3 is equipped with an endoscope assembly 5. The endoscope assembly 5 facilitates precise puncture of the puncture assembly 2, thereby enabling rapid and accurate sampling or treatment of lesions. The endoscope assembly 5 includes a threaded post 501, with a guide tube 502 fixedly connected to the other end of the threaded post 501. The other end of the guide tube 502 is fixedly connected to a lens 503. In the combined state, the threaded post 501 is threadedly connected to the corresponding threaded sleeve 404. The guide tube 502 and the lens 503 are both located inside the puncture needle 201. When performing puncture surgery on a patient, the endoscope assembly 503 is required. The endoscope assembly 5 is first assembled with the puncture assembly 2. After assembly, the specific puncture location can be observed through the lens 503, allowing medical staff to perform the most precise puncture operation with the puncture assembly 2 while directly seeing the target, improving the accuracy of puncture, avoiding incorrect placement, and reducing the pain to the patient during puncture surgery. Furthermore, the threaded post 501 and the threaded sleeve 404 are threadedly connected, facilitating subsequent assembly and disassembly with the grasping forceps assembly 4, and making it convenient for subsequent disinfection of the endoscope assembly 5. At the same time, the assembly of the two prevents the medical device from being missed when not in use.
[0050] The working principle of this embodiment is as follows: When performing a puncture on a patient, the puncture needle 201 is first inserted into the outer tube body 102, and at the same time, two second spring plates 203 are inserted into the corresponding limiting grooves 106. When the fixing plate 202 is pushed a certain distance, the two limiting blocks 204 are inserted into the corresponding through holes 107, thereby locking the entire fixing plate 202, thus stably assembling the puncture needle 201 and the outer tube body 102. Then, the connecting mechanism 3 and the endoscope assembly 5 are quickly assembled with the puncture assembly 2. Medical staff insert the lens 503 and the guide tube 502 into the puncture needle 201 and into the designated position. At this time, multiple fixing posts 302 are inserted into the corresponding rubber sleeves 105, thereby stably assembling the connecting seat 301 and the tube sheath 101, thus quickly assembling the connecting mechanism 3 and the endoscope assembly 5 with the puncture assembly 2.
[0051] At this time, medical staff hold the sheath 101 to push the outer tube body 102 and the puncture component 2 into the skin. When the puncture needle 201 is inserted, the outer tube body 102 is inserted at the same time. Medical staff can observe the specific puncture position through the lens 503, which can improve the accuracy of the puncture and avoid the wrong position. When the outer tube body 102 is inserted into the skin to a specific depth, the anti-slip ripples 103 improve the friction effect with the flesh, thereby preventing the outer tube body 102 from sliding. After puncturing the designated position, when it is necessary to inject medicine for treatment, the syringe is inserted into the rubber head 111. The medicine flows into the puncture component 2 through the drainage groove 110 and then into the area to be treated to achieve medicine treatment.
[0052] When it is necessary to grasp the lesion, the medical staff pulls the connecting seat 301 to remove the connecting mechanism 3 and the endoscope assembly 5 from the puncture assembly 2. At this time, the positions of the endoscope assembly 5 and the grasping forceps assembly 4 are reversed, and the grasping forceps body 407 is quickly inserted into the puncture needle 201. When one end of the instrument rod 406 and the grasping forceps body 407 pass through the puncture needle 201 and the connecting seat 301 is in contact with one end of the sheath 101, the grasping forceps assembly 4 and the connecting mechanism 3 are quickly assembled with the puncture assembly 2. At this time, the grasping forceps body 407 is... 7. The puncture needle 201 is inserted near the lesion. The medical staff pulls the threaded sleeve 404, which pulls the connecting column 405. The connecting column 405 pulls the instrument rod 406, which in turn pulls the grasping forceps body 407. Since the grasping forceps body 407 is elastic, when the grasping forceps body 407 is pulled and retracted into the plastic tube 408, the port of the grasping forceps body 407 is clamped, thereby clamping the lesion. Then, the connecting mechanism 3 is pulled to remove the lesion, thus achieving the grasping of the lesion.
[0053] When the tension on the threaded sleeve 404 is released, the instrument rod 406 is reset via multiple slide bars 402, which in turn resets via multiple reset springs 401, facilitating the grasping of the next lesion. Medical staff can adjust the angle of the grasping forceps body 407 according to the shape of the lesion. Since the threaded sleeve 404 is rotatably connected to the connecting ring 403, rotating the threaded sleeve 404 drives the instrument rod 406 to rotate, which in turn drives the grasping forceps body 407 to rotate, thereby changing the angle of the grasping forceps body 407, thus facilitating the quick grasping of lesions and improving the efficiency of puncture surgery.
[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A cardiothoracic surgical trocar with stable puncture force, comprising an outer cannula assembly (1), characterized in that: The outer tube assembly (1) is equipped with a puncture assembly (2), and a connecting mechanism (3) is installed at one end of the outer tube assembly (1). One end of the connecting mechanism (3) is equipped with a gripping forceps assembly (4), and the other end of the connecting mechanism (3) is equipped with an endoscope assembly (5). The endoscope assembly (5) facilitates the precise puncture of the puncture assembly (2), thereby enabling rapid and accurate sampling or treatment of the lesion.
2. The cardiothoracic surgical trocar with stable puncture force according to claim 1, characterized in that, The outer tube assembly (1) includes a tube sheath (101), one end of which is fixedly connected to an outer tube body (102). One end of the outer wall of the outer tube body (102) is provided with anti-slip corrugations (103), and the other end of the outer tube body (102) is provided with multiple circular grooves (104). Each of the multiple circular grooves (104) is fixedly connected with a rubber sleeve (105). The tube sheath (101) is provided with two limiting grooves (106). The front and rear ends of the tube sheath (101)... Each of the tube sheaths (101) has a through hole (107) near the limiting groove (106). The front and rear ends of the tube sheath (101) are fixedly connected to the through holes (107). The inner end faces of the two first spring plates (108) are fixedly connected to the compression blocks (109). The top of the tube sheath (101) has a drainage groove (110). The top of the tube sheath (101) is fixedly connected to the rubber head (111) near the drainage groove (110).
3. The cardiothoracic surgical trocar with stable puncture force according to claim 2, characterized in that, The puncture assembly (2) includes a puncture needle (201) disposed in the outer tube body (102). One end of the puncture needle (201) is fixedly connected to a fixing plate (202). The front and rear ends of one side of the fixing plate (202) are fixedly connected to second spring plates (203). Limiting blocks (204) are fixedly connected to the two second spring plates (203). A drainage hole (205) is opened at one end of the top of the puncture needle (201).
4. The cardiothoracic surgical trocar with stable puncture force according to claim 3, characterized in that, In the combined state, the two second spring sheets (203) are located in the corresponding limiting grooves (106), and the two limiting blocks (204) are in contact with the inner wall of the corresponding through holes (107).
5. A cardiothoracic surgical trocar with stable puncture force according to claim 3, characterized in that, In the combined state, the drainage hole (205) is aligned with the drainage groove (110).
6. The cardiothoracic surgical trocar with stable puncture force according to claim 2, characterized in that, The connecting mechanism (3) includes a connecting seat (301), one end of which is fixedly connected to a plurality of fixed posts (302), and the interior of the connecting seat (301) is provided with a plurality of sliding grooves (303).
7. A cardiothoracic surgical trocar with stable puncture force according to claim 6, characterized in that, In the combined state, the multiple fixing posts (302) are respectively inserted into the corresponding rubber sleeves (105).
8. A cardiothoracic surgical trocar with stable puncture force according to claim 6, characterized in that, The gripper assembly (4) includes multiple return springs (401), one end of each return spring (401) is fixedly connected to a slide bar (402), the other end of each slide bar (402) is fixedly connected to a connecting ring (403), the inner wall of the connecting ring (403) is rotatably connected to a threaded sleeve (404), the other end of the threaded sleeve (404) is fixedly connected to a connecting post (405), the other end of the connecting post (405) is fixedly connected to an instrument rod (406), the other end of the instrument rod (406) is fixedly installed with a gripper body (407), and the center of the inner wall of the connecting seat (301) is fixedly connected to a plastic tube (408).
9. A cardiothoracic surgical trocar with stable puncture force according to claim 8, characterized in that, Multiple reset springs (401) are fixedly connected to one end of the corresponding slide groove (303), multiple slide bars (402) are slidably connected to the corresponding slide groove (303), and the instrument rod (406) is located inside the plastic tube (408).
10. A cardiothoracic surgical trocar with stable puncture force according to claim 8, characterized in that, The endoscope assembly (5) includes a threaded post (501), with a guide tube (502) fixedly connected to the other end of the threaded post (501) and a lens (503) fixedly connected to the other end of the guide tube (502). In the combined state, the threaded post (501) is threadedly connected to the corresponding threaded sleeve (404), and the guide tube (502) and the lens (503) are both located inside the puncture needle (201).