A distraction device for cardiovascular surgery

Abstract

The application discloses a cardiovascular surgery expansion device, and belongs to the field of medical instruments, which comprises a fixing assembly, an expansion assembly and a support frame, wherein the fixing assembly is provided with an expansion plate, a clamping plate, a suction cup and a negative pressure tank, and the expansion assembly is provided with an expansion rod, a gear knob and a locking button. The clamping plate and the suction cup are used in a double fixing mode of hooking and pulling and negative pressure adsorption, which is suitable for different surgical scenes and patients. The force safety feedback can be provided by adjusting the threaded rod in cooperation with the spring, so that the tissue is prevented from being excessively pulled and damaged. The gear knob is used for fine adjustment of the expansion force, and the limiting bevel gear and the locking wedge are used for ensuring the stable locking during the operation. After the operation, the device can be disassembled in only two steps, and the secondary touch of the wound is reduced. The device is simple in operation, high in safety, and can meet the needs of the cardiovascular surgery for the visual field exposure and tissue protection.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically referring to a dissector for cardiovascular surgery. Background Technology

[0002] Cardiac surgery requires a device to stably expose the chest cavity and maintain a high level of tissue protection, but current devices have key shortcomings. On the one hand, the fixation method is limited; the splint can easily damage the skin and flesh (especially the soft tissues of children), while the single suction cup is easily dislodged by vibration and exudate, making it difficult to balance protection and stability. On the other hand, the precision of force control is insufficient, and there is a lack of intuitive safety feedback. Surgeons rely heavily on experience to adjust the device, which can easily lead to excessive force that damages tissues and even affects deep blood vessels.

[0003] Furthermore, existing devices lack adaptability and ease of operation. Their versatility is poor, failing to flexibly match different surgical types (such as minimally invasive and open-chest procedures) and patient groups (adults and children), often requiring temporary replacement of parts and extending preparation time. Intraoperative locking structures are prone to accidental retraction due to metal fatigue, and postoperative disassembly requires multiple steps, not only interfering with the surgery but also potentially causing secondary wound contact and increasing patient discomfort. Therefore, current devices have significant shortcomings in terms of fixation compatibility, force safety, scenario coverage, and operational efficiency, necessitating the development of new devices to meet clinical needs. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a dissector for cardiovascular surgery, which effectively solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a dissector for cardiovascular surgery, including a fixation component, a dissector component and a support frame. The fixation component is disposed on the dissector component, and the dissector component is symmetrically disposed on the support frame. The fixation component includes a dissector plate, a clamping plate and a suction cup. The clamping plate is disposed on the front side of the dissector plate and the suction cup is disposed on the bottom of the dissector plate.

[0006] Furthermore, the expansion plate has a suction cup hole at its center, sliding rod sleeves on both sides of the expansion plate, a fixing groove at the tail of the expansion plate, clamping plate sliding rods on both sides of the clamping plate, the clamping plate sliding rods sliding within the sliding rod sleeves, a clamping plate groove at the front end of the clamping plate, and the suction cup located within the suction cup hole.

[0007] Furthermore, the fixing assembly also includes a negative pressure tank and an adjusting threaded rod. The negative pressure tank is located on the top of the support plate, and the adjusting threaded rod is located in the slide sleeve and inside the clamping plate slide rod. The adjusting threaded rod and the clamping plate slide rod are connected by threads.

[0008] Furthermore, the bottom of the negative pressure tank is provided with a suction cup tube, the top of the suction cup is located inside the suction cup tube, the top of the negative pressure tank is provided with a threaded top tube, the end of the adjusting threaded rod is provided with an adjusting spring and a spring knob, one end of the adjusting spring is attached to the spring knob, and the other end of the adjusting spring is attached to the outer wall of the sliding rod sleeve.

[0009] Preferably, the adjusting threaded rod can be set to adjust the spring force. When the tension of the clamp is too great, the spring is compressed and drives the clamp forward. The doctor can observe the movement and control the force in real time within a safe range to avoid excessive traction damage to the tissue.

[0010] Furthermore, the negative pressure tank is equipped with a piston plate and a piston knob inside. The piston plate slides inside the negative pressure tank, and the piston knob is connected to the threaded top tube by threads. The bottom of the piston knob is provided with a piston groove, and the top of the piston plate is located on the piston groove.

[0011] Preferably, the device supports two fixation modes: one where the splint hooks onto the patient's skin and flesh, and the other where the suction cup adsorbs the patient's skin and flesh. This allows for flexible selection based on the complexity of the surgery, such as whether deep tissues need to be exposed or the patient's age, thus reducing limitations on the scenario.

[0012] Furthermore, the spreading assembly includes a spreading rod, a gear knob, and a locking button. The spreading rod is located inside the support frame, the gear knob is located on one side of the spreading rod, and the locking button is located on the other side of the spreading rod.

[0013] Furthermore, the expansion rod has a limiting helical tooth on one side and a driving tooth on the other side. The front end of the expansion rod has a connector, which is located in a fixing groove and connected to the fixing groove by bolts.

[0014] Furthermore, the gear knob has a drive gear at its bottom and a knob head at its top. The drive gear meshes with the drive teeth. The locking button has a locking wedge at its bottom, which engages with the limiting helical teeth. The locking button has a spring plate at its front end, and a return spring is located inside the spring plate.

[0015] Preferably, by rotating the knob head to drive the drive gear, the movement range of the outer side of the spreading rod can be directly controlled, so as to achieve fine adjustment of the spreading force and adapt to the spreading requirements of different surgical sites. At the same time, the limiting helical teeth of the spreading rod cooperate with the right-angle side of the locking wedge to stably lock the spreading position and avoid accidental retraction during the operation.

[0016] Furthermore, the support frame has symmetrical rod grooves at both ends, the spreading rod slides in the rod groove, one side of the rod groove has a side wall knob groove, the other side of the support frame has a wedge groove, the drive gear is located in the side wall knob groove, and the locking wedge is located in the wedge groove.

[0017] Furthermore, a spring plate groove is provided at the top of the rod groove, and a baffle is provided on the outside of the spring plate groove. The spring plate slides in the spring plate groove, and the end of the return spring is provided on the baffle.

[0018] Preferably, the disassembly can be completed in just two steps after the operation. First, turn the piston knob to return the piston plate to its original position and allow the suction cup to detach from the skin and flesh. Then, push the locking button to compress the reset spring. After unlocking, turn the gear knob to move the spreading rod inward and remove the device. The operation process is short and reduces secondary contact with the patient's wound.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows:

[0020] 1. The adjustable threaded rod can be used to adjust the spring force. When the tension of the splint is too great, the spring will compress and move the splint forward. Doctors can observe the movement and control the force in real time within a safe range to avoid excessive traction damage to the tissue.

[0021] 2. It supports two fixation modes: the splint hooks onto the patient's skin and flesh tissue, and the suction cups adsorb the patient's skin and flesh tissue. The choice can be made flexibly according to the complexity of the surgery, such as whether deep tissue needs to be exposed or the patient's age, reducing the limitations of different scenarios.

[0022] 3. By rotating the knob head to drive the drive gear, the movement range of the outer side of the spreading rod can be directly controlled, so as to achieve fine adjustment of the spreading force and adapt to the spreading needs of different surgical sites. At the same time, the limiting helical teeth of the spreading rod cooperate with the right-angle side of the locking wedge to stably lock the spreading position and avoid accidental retraction during the operation.

[0023] 4. The disassembly can be completed in just two steps after the operation. First, turn the piston knob to return the piston plate to its original position and let the suction cup detach from the skin and flesh. Then, push the locking button to compress the reset spring. After unlocking, turn the gear knob to move the spreading rod inward and remove the device. The operation process is short and reduces secondary contact with the patient's wound.

[0024] 5. Whether it is adjusting the opening force with the knob head (knob head), negative pressure suction (piston knob), or setting the safety force (adjusting threaded rod), all are achieved through knob operation, which makes it easy for doctors to learn and requires no complicated training. Attached Figure Description

[0025] Figure 1 This is a perspective view of a cardiovascular surgical retraction device proposed in this invention;

[0026] Figure 2 This is a front view of a cardiovascular surgical retraction device proposed in this invention;

[0027] Figure 3 This is a top view of a cardiovascular surgical retraction device proposed in this invention;

[0028] Figure 4 for Figure 2 A cross-sectional view along section line AA;

[0029] Figure 5 for Figure 2 A cross-sectional view along the cutting line BB;

[0030] Figure 6 for Figure 3 A cross-sectional view along the section line CC;

[0031] Figure 7 for Figure 3 A cross-sectional view along the cutting line DD;

[0032] Figure 8 This is a schematic diagram of the structure of the opening plate of the opening device for cardiovascular surgery proposed in this invention;

[0033] Figure 9 This is a schematic diagram of the piston knob of a cardiovascular surgical dissector proposed in this invention;

[0034] Figure 10 This is a schematic diagram of the structure of the spreading rod of a spreading device for cardiovascular surgery proposed in this invention.

[0035] Among them, 1. Fixing component, 11. Spreading plate, 111. Suction cup hole, 112. Slide rod sleeve, 113. Fixing groove, 12. Clamping plate, 121. Clamping plate slide rod, 122. Clamping plate groove, 13. Suction cup, 14. Negative pressure tank, 141. Suction cup tube, 142. Threaded jacking tube, 15. Adjusting threaded rod, 151. Adjusting spring, 152. Spring knob, 16. Piston plate, 17. Piston knob, 171. Piston clip. 1. Groove; 2. Spreading assembly; 21. Spreading rod; 211. Limiting helical tooth; 212. Driving tooth; 213. Connector; 22. Gear knob; 221. Driving gear; 222. Knob head; 23. Locking button; 231. Locking wedge; 232. Spring plate; 233. Return spring; 3. Support frame; 31. Rod groove; 32. Side wall knob groove; 33. Wedge groove; 34. Spring plate groove; 341. Baffle.

[0036] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] like Figures 1-10 As shown, the present invention proposes a dissector for cardiovascular surgery, including a fixation component 1, a dissector 2, and a support frame 3. The fixation component 1 is disposed on the dissector 2, and the dissector 2 is symmetrically disposed on the support frame 3. The fixation component 1 includes a dissector plate 11, a clamping plate 12, and a suction cup 13. The clamping plate 12 is disposed on the front side of the dissector plate 11, and the suction cup 13 is disposed on the bottom of the dissector plate 11.

[0040] The expansion plate 11 has a suction cup hole 111 in the center, slide rod sleeves 112 on both sides of the expansion plate 11, a fixing groove 113 at the tail of the expansion plate 11, and clamping plate slide rods 121 on both sides of the clamping plate 12. The clamping plate slide rods 121 slide in the slide rod sleeves 112, and clamping plate groove 122 is provided at the front end of the clamping plate 12. The suction cup 13 is located in the suction cup hole 111.

[0041] The fixing assembly 1 also includes a negative pressure tank 14 and an adjusting threaded rod 15. The negative pressure tank 14 is located on the top of the support plate 11, and the adjusting threaded rod 15 is located in the slide sleeve 112 and inside the clamping plate slide rod 121. The adjusting threaded rod 15 and the clamping plate slide rod 121 are connected by threads.

[0042] The bottom of the negative pressure tank 14 is provided with a suction tube 141, the top of the suction cup 13 is located inside the suction tube 141, the top of the negative pressure tank 14 is provided with a threaded top tube 142, the end of the adjusting threaded rod 15 is provided with an adjusting spring 151 and a spring knob 152, one end of the adjusting spring 151 is attached to the spring knob 152, and the other end of the adjusting spring 151 is attached to the outer wall of the sliding rod sleeve 112.

[0043] The negative pressure tank 14 is equipped with a piston plate 16 and a piston knob 17. The piston plate 16 slides inside the negative pressure tank 14. The piston knob 17 is connected to the threaded top tube 142 by threads. The bottom of the piston knob 17 is provided with a piston groove 171, and the top of the piston plate 16 is provided on the piston groove 171.

[0044] The expansion assembly 2 includes an expansion rod 21, a gear knob 22, and a locking button 23. The expansion rod 21 is located inside the support frame 3, the gear knob 22 is located on one side of the expansion rod 21, and the locking button 23 is located on the other side of the expansion rod 21.

[0045] The expansion rod 21 has a limiting helical tooth 211 on one side and a driving tooth 212 on the other side. The front end of the expansion rod 21 has a connector 213, which is located in the fixing groove 113 and is connected to the fixing groove 113 by bolts.

[0046] The gear knob 22 has a drive gear 221 at the bottom and a knob head 222 at the top. The drive gear 221 meshes with the drive teeth 212. The locking button 23 has a locking wedge 231 at the bottom, which engages with the limiting helical teeth 211. The locking button 23 has a spring plate 232 at the front end and a return spring 233 inside the spring plate 232.

[0047] The support frame 3 has symmetrical rod grooves 31 at both ends. The spreading rod 21 slides in the rod groove 31. A side wall knob groove 32 is provided on one side of the rod groove 31, and a wedge groove 33 is provided on the other side of the support frame 3. The drive gear 221 is located in the side wall knob groove 32, and the locking wedge 231 is located in the wedge groove 33.

[0048] The top of the rod groove 31 is provided with a spring plate groove 34, and a baffle 341 is provided on the outside of the spring plate groove 34. The spring plate 232 slides in the spring plate groove 34, and the end of the return spring 233 is provided on the baffle 341.

[0049] In practical use, the support frame 3 is fixed on the operating table, and the cut skin and flesh tissue is hooked by the splint groove 122 of the splint 12. By turning the knob head 222, the drive gear 221 is driven to rotate. The drive gear 221 drives the spreading rod 21 to move outward, so that the skin and flesh tissue of the chest cavity is spread open to expose the heart surgery site. During the movement of the spreading rod 21, the limiting helical tooth 211 slides over the inclined surface of the locking wedge 231, and the right angle side of the locking wedge 231 blocks the limiting helical tooth 211, which plays the role of locking the spreading rod 21. The spreading force is adjusted by turning the knob head 222.

[0050] By rotating the piston knob 17, the piston plate 16 is moved upward, creating negative pressure in the negative pressure tank 14. This causes the suction cup 13 to adhere to the patient's skin and flesh tissue, providing double fixation and preventing it from falling off. Furthermore, depending on the surgery and the patient's condition, it is possible to choose whether to use the splint 12 to hook the cut skin and flesh tissue. The suction fixation of the suction cup 13 causes minimal tissue damage and is suitable for children's soft and fragile skin and flesh tissue.

[0051] Before using the splint 12, the length of the adjusting threaded rod 15 on the outside of the spreading plate 11 can be changed by rotating the adjusting threaded rod 15, thereby changing the elastic force of the adjusting spring 151. When the splint 12 exerts too much force on the patient's skin and flesh, the adjusting spring 151 will be compressed, causing the splint 12 to move forward. This buffers the spreading force and allows the doctor to visually observe the movement of the splint 12, thus controlling the spreading force within a safe range. By adjusting the threaded rod 15 to set a safe force, the technical effect of controlling the spreading force within a safe range can be achieved.

[0052] After the surgery, turn the piston knob 17 to move the piston plate 16 to the bottom, causing the suction cup 13 to detach from the patient's skin and flesh. The doctor pushes the locking button 23 outward with his finger. The locking button 23 compresses the reset spring 233, causing the locking wedge 231 to disengage from the limiting helical tooth 211. Turn the gear knob 22 to move the spreading rod 21 inward, causing the splint 12 to detach from the skin and flesh. The device can then be disassembled, and the patient's wound can be sutured.

[0053] The above is the overall workflow of this invention. Simply repeat this process the next time you use it.

[0054] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0056] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A retraction device for cardiovascular surgery, characterized in that: It includes a fixing component (1), a spreading component (2) and a support frame (3), wherein the fixing component (1) is disposed on the spreading component (2) and the spreading component (2) is symmetrically disposed on the support frame (3); The fixing component (1) includes a support plate (11), a clamping plate (12) and a suction cup (13). The clamping plate (12) is located on the front side of the support plate (11), and the suction cup (13) is located on the bottom of the support plate (11). The expansion plate (11) is provided with sliding rod sleeves (112) on both sides, the expansion plate (11) is provided with a fixing groove (113) at the tail, and the clamping plate (12) is provided with clamping plate sliding rods (121) on both sides. The fixing component (1) also includes a negative pressure tank (14) and an adjusting threaded rod (15). The negative pressure tank (14) is located on the top of the support plate (11). The adjusting threaded rod (15) is located in the slide sleeve (112) and is located inside the clamping plate slide rod (121). The adjusting threaded rod (15) and the clamping plate slide rod (121) are connected by threads. The bottom of the negative pressure tank (14) is provided with a suction tube (141), the top of the suction cup (13) is located inside the suction tube (141), the top of the negative pressure tank (14) is provided with a threaded top tube (142), the end of the adjusting threaded rod (15) is provided with an adjusting spring (151) and a spring knob (152), one end of the adjusting spring (151) is attached to the spring knob (152), and the other end of the adjusting spring (151) is attached to the outer wall of the sliding rod sleeve (112); The expansion assembly (2) includes an expansion rod (21), a gear knob (22) and a locking button (23). The expansion rod (21) is located inside the support frame (3), the gear knob (22) is located on one side of the expansion rod (21), and the locking button (23) is located on the other side of the expansion rod (21). The expansion rod (21) has a limiting helical tooth (211) on one side and a driving tooth (212) on the other side. The expansion rod (21) has a connector (213) at the front end. The connector (213) is located in the fixing groove (113), and the fixing groove (113) and the connector (213) are connected by bolts. The gear knob (22) has a drive gear (221) at the bottom and a knob head (222) at the top. The drive gear (221) meshes with the drive teeth (212). The locking button (23) has a locking wedge (231) at the bottom. The locking wedge (231) engages with the limiting helical teeth (211). The locking button (23) has a spring plate (232) at the front end and a return spring (233) on the inner side of the spring plate (232).

2. The cardiovascular surgical retraction device according to claim 1, characterized in that: The center of the support plate (11) is provided with a suction cup hole (111), the clamping plate slide rod (121) slides in the slide rod sleeve (112), the front end of the clamping plate (12) is provided with a clamping plate groove (122), and the suction cup (13) is provided in the suction cup hole (111).

3. The cardiovascular surgical retraction device according to claim 2, characterized in that: The negative pressure tank (14) is provided with a piston plate (16) and a piston knob (17) inside. The piston plate (16) slides inside the negative pressure tank (14). The piston knob (17) is connected to the threaded top tube (142) by threads. The bottom of the piston knob (17) is provided with a piston groove (171). The top of the piston plate (16) is located on the piston groove (171).

4. The cardiovascular surgical retraction device according to claim 3, characterized in that: The support frame (3) has symmetrical rod grooves (31) at both ends. The spreading rod (21) slides in the rod groove (31). The rod groove (31) has a side wall knob groove (32) on one side and a wedge groove (33) on the other side. The drive gear (221) is located in the side wall knob groove (32) and the locking wedge (231) is located in the wedge groove (33).

5. The cardiovascular surgical retraction device according to claim 4, characterized in that: The top of the rod groove (31) is provided with a spring plate groove (34), and a baffle (341) is provided on the outside of the spring plate groove (34). The spring plate (232) slides in the spring plate groove (34), and the end of the reset spring (233) is provided on the baffle (341).

Images