Expander for ECMO surgery
By designing an ECMO surgical dilator with a blade and a moving block, the problem of the dilator being easily stuck when pierced into the human body is solved, and an operation without step-by-step expansion is achieved to ensure the normal progress of the operation and the improvement of efficiency.
Patent Information
- Application Number
- CN202421187340.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-05-28
AI Technical Summary
After the guidewire is inserted into the blood vessel puncture, the dilator is easily stuck by the skin when it pierces into the human body, resulting in the inability to expand step by step, affecting the operation.
An ECMO surgical dilator is designed, including a conical tube body and a blade, with a receiving groove on the tube body, which can move in the receiving groove and drive the blade to cut the skin through a movable block and a drive shaft to ensure that the dilator can be inserted smoothly.
The dilator does not need to expand step by step, and can avoid being stuck, ensure that the operation is carried out normally, and improve the efficiency and safety of the operation.
Smart Images
Figure CN222998158U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical auxiliary equipment, and particularly relates to a dilator for ECMO surgery. Background Art
[0002] After a guide wire is punctured and inserted, the blood vessel needs to be gradually dilated with a dilator. Tubes of different sizes need to be gradually dilated with a dilator. And during the dilation process, since the initial wound is relatively small, the dilator will be stuck by the skin when inserted into the human body, resulting in a situation where dilation cannot be performed, which affects the progress of the operation. Content of the Utility Model
[0003] This part of the content of the present application is used to briefly introduce the concepts, which will be described in detail in the following detailed implementation part. This part of the content of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.
[0004] The utility model provides a dilator for ECMO surgery in order to overcome the deficiencies of the prior art.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions: A dilator for ECMO surgery includes a tube body and a blade. The tube body is of a conical structure, and a receiving groove for the blade to extend into is provided on the tube body.
[0006] Further, the length of the blade is less than the length of the receiving groove, and the blade can move within the receiving groove.
[0007] Further, a movable block is provided in the receiving groove. An installation block is provided on the movable block, and the blade is arranged on the installation block. The installation block can move relative to the movable block.
[0008] Further, a connecting block is provided at the bottom of the installation block, and a connecting groove corresponding to the connecting block is provided on the movable block. The connecting block can move within the connecting groove.
[0009] Further, a first movable cavity communicating with the connecting groove is provided on the movable block. A guide block is provided in the first movable cavity. An inclined surface is provided on the guide block, and a transmission shaft for driving the guide block to move is provided on the movable block.
[0010] Further, a first movable groove is provided on the side wall of the receiving groove, and a first push rod is provided on the side wall of the movable block. The first push rod extends out of the first movable groove; a first through cavity is provided on the first push rod, and the transmission shaft passes through the first through cavity.
[0011] Further, a first push block is provided at one end of the first push rod. A transmission wheel in transmission cooperation with the transmission shaft is provided on the first push block, and the transmission wheel protrudes from the top surface of the first push block.
[0012] Further, a second movable cavity communicating with the first through cavity is provided on the first pushing block. A fixing block is provided in the second movable cavity. A second spring is provided at the bottom of the fixing block. A first connecting rod is provided at the top of the fixing block. A frame body is provided at the top of the first connecting rod. When the fixing block abuts against the transmission shaft, the frame body is located above the transmission wheel.
[0013] Further, a third movable cavity is provided on the first push rod. A movable rod is provided in the third movable cavity. A convex rod is provided at the bottom of the movable rod. A groove corresponding to the convex rod is provided on the inner wall of the first movable groove. A plurality of limiting rods are provided in the groove. The length of the convex rod is less than the width of the groove. The length of the limiting rod is less than the width of the groove. A second pushing block for pushing the movable rod to move is provided on the first pushing block.
[0014] Further, a baffle is provided in the accommodating groove. An accommodating cavity corresponding to the baffle is provided on the side wall of the accommodating groove. A second through cavity is provided at one end of the accommodating groove. A second connecting rod is provided at one end of the baffle. The second connecting rod passes through the second through cavity. A third pushing block is provided at one end of the second connecting rod.
[0015] The beneficial effect of the present utility model is to provide an expander for ECMO surgery that does not require step-by-step expansion, avoids being stuck during the expansion process, and ensures the normal progress of the surgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, objects, and advantages of this application more obvious. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation of this application.
[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the elements and elements are not necessarily drawn to scale.
[0018] In the drawings:
[0019] Figure 1 is a schematic structural diagram of an expander for ECMO surgery in an embodiment of the present utility model.
[0020] Figure 2 is a schematic structural diagram of an expander for ECMO surgery in another embodiment of the present utility model.
[0021] Figure 3 is Figure 2 a cross-sectional view of the tube body of the expander for ECMO surgery in the illustrated embodiment.
[0022] Figure 4 is Figure 3 an enlarged view of part A in
[0023] Figure 5 is Figure 2Cross-sectional view of the support block of the dilator for ECMO surgery in the illustrated embodiment.
[0024] Figure 6 is Figure 5 the enlarged view at B in
[0025] Figure 7 is Figure 2 the cross-sectional view of the first push block of the dilator for ECMO surgery in the illustrated embodiment.
[0026] Figure 8 is Figure 7 the enlarged view at C in
[0027] Figure 9 is Figure 2 the cross-sectional view of the first push rod of the dilator for ECMO surgery in the illustrated embodiment.
[0028] Figure 10 is Figure 9 the enlarged view at D in
[0029] Figure 11 is Figure 2 the cross-sectional view of the baffle of the dilator for ECMO surgery in the illustrated embodiment.
[0030] Figure 12 is Figure 11 the enlarged view at E in
[0031] The meanings of the reference numerals in the figure are as follows:
[0032] 101, tube body; 102, baffle; 103, first push block; 104, movable block; 105, mounting block; 1051, connecting block; 106, blade; 107, guide block; 108, transmission shaft; 109, support block; 110, first spring; 111, transmission wheel; 112, fixed block; 1121, second spring; 1122, first connecting rod; 1123, frame; 113, second push block; 1131, movable rod; 114, first push rod; 115, groove; 116, limiting rod; 117, accommodating cavity; 200, blade; 201, knife handle. Detailed implementation manners
[0033] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the accompanying drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.
[0034] It should also be noted that for ease of description, only parts related to the relevant utility model are shown in the drawings. Without conflict, the embodiments and features in the present disclosure can be combined with each other.
[0035] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.
[0036] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".
[0037] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.
[0038] The present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0039] As Figure 1 shown, an expander for ECMO surgery includes a tube body 101 and a blade 200. The tube body 101 is of a conical structure, and scales are provided on the upper surface of the tube body 101 to facilitate medical staff to perform expansion as needed. When using the expander of the present application for expansion operation, there is no need for step-by-step expansion. The tube body 101 can be directly inserted to achieve expansion, making the surgical operation more convenient and efficient and saving the surgical duration. A receiving groove for the blade 200 to extend into is provided on the tube body 101, and a handle 201 is provided at one end of the blade 200. The length of the blade 200 is less than the length of the receiving groove. The handle 201 can be used to push the blade 200 to move in the receiving groove. When the expander is blocked when piercing the skin, the blade 200 is extended into the receiving groove from one end, and the skin is cut by the blade 200 so that the expander can continue to move to complete the expansion operation.
[0040] As a further preferred solution, as Figure 2-12 shown, a movable block 104 is provided in the receiving groove, and the movable block 104 can move along the inner wall of the receiving groove. An installation block 105 is provided on the movable block 104, a blade 106 is provided on the installation block 105, a connecting block 1051 is provided at the bottom of the installation block 105, and a connecting groove corresponding to the connecting block 1051 is provided on the movable block 104. The connecting block 1051 can move in the connecting groove.
[0041] The movable block 104 is provided with a first movable cavity communicating with the connecting groove. A guide block 107 is arranged in the first movable cavity. The guide block 107 is provided with an inclined surface. The movable block 104 is provided with a transmission shaft 108 for driving the guide block 107 to move. When the guide block 107 moves towards the connecting groove, the inclined surface abuts against the bottom surface of the connecting block 1051. The movement of the guide block 107 pushes the connecting block 1051 to move out of the connecting groove, so that the mounting block 105 rises relative to the movable block 104 from the receiving groove. The width of the guide block 107 is smaller than the width of the connecting block 1051. The bottom of the connecting groove is provided with a support block 109 and a mounting groove. The connecting block 1051 abuts against the support block 109, leaving a gap between the connecting block 1051 and the bottom surface of the connecting groove, so that the guide block 107 can be inserted under the connecting block 1051 when it moves. A first spring 110 is arranged in the mounting groove. One end of the first spring 110 is fixedly connected to the mounting groove, and the other end is fixedly connected to the bottom surface of the connecting block 1051. The connecting block 1051 cannot be disengaged from the connecting groove. After the guide block 107 moves away from under the connecting block 1051, the first spring 110 pulls the mounting block 105 to move towards the movable block 104, so that the blade 106 enters the receiving groove.
[0042] Further, a first movable groove is arranged on the side wall of the receiving groove, and a first push rod 114 is arranged on the side wall of the movable block 104. The first push rod 114 extends out of the first movable groove. The first push rod 114 is provided with a first through cavity, and the transmission shaft 108 is arranged in the first through cavity.
[0043] One end of the first push rod 114 is provided with a first push block 103. The first push block 103 is provided with a transmission groove communicating with the first through cavity. A transmission wheel 111 in transmission cooperation with the transmission shaft 108 is arranged in the transmission groove. The transmission wheel 111 protrudes from the top surface of the first push block 103. The first push block 103 is further provided with a second movable cavity communicating with the first through cavity. The transmission groove is arranged on one side of the first through cavity, and the second movable cavity is arranged on the other side of the first through cavity. A fixed block 112 is arranged in the second movable cavity. A second spring 1121 is arranged at the bottom of the fixed block 112, and a first connecting rod 1122 is arranged at the top of the fixed block 112. The first connecting rod 1122 passes through the second movable cavity so that its top end is on the side wall of the first push block 103. A frame 1123 is arranged at the top of the first connecting rod 1122, and the transmission wheel 111 is in the middle of the frame 1123. When the fixed block 112 abuts against the transmission shaft 108, the frame 1123 is above the transmission wheel 111.
[0044] The first push rod 114 is provided with a third movable cavity. An activity rod 1131 is arranged in the third movable cavity. A convex rod is arranged at the bottom of the activity rod 1131. A groove 115 corresponding to the convex rod is arranged on the inner wall of the first activity groove. A plurality of limiting rods 116 are arranged in the groove 115. The lengths of the convex rod and the limiting rods 116 are both smaller than the width of the groove 115. Preferably, the length of the convex rod is the same as that of the limiting rods 116, and the width of the groove 115 is twice the length of the convex rod. A tooth-locking structure is formed between the limiting rods 116 and the convex rod. A second activity groove communicating with the third movable cavity is arranged on the first push block 103. The activity rod 1131 extends to the second activity groove. A second push block 113 is arranged on the activity rod 1131. The second push block 113 extends out of the second activity groove.
[0045] Further, a baffle 102 is arranged in the accommodation groove. The baffle 102 is used to close the accommodation groove. An accommodation cavity 117 corresponding to the baffle 102 is arranged on the side wall of the accommodation groove. A second through cavity is arranged at one end of the accommodation groove. The second through cavity communicates with one end of the pipe body 101. A second connecting rod is arranged at one end of the baffle 102. The second connecting rod penetrates through the second through cavity. A third push block is arranged at one end of the second connecting rod.
[0046] During the daily storage of the dilator, the movable block 104 is at the end of the accommodation groove farthest from the tip. The connecting block 1051 abuts against the support block 109. The blade 106 is in the accommodation groove. The baffle 102 is in the accommodation groove to close the accommodation groove, preventing the blade 106 from accidentally injuring medical staff. When the dilator fails to dilate the skin, push the third push block to move. The second connecting rod drives the baffle 102 to enter the accommodation cavity 117 to open the accommodation groove. Push the second push block 113 in the direction away from the first push block 103. The second push block 113 drives the activity rod 1131 to move so that the convex rod moves away from the limiting rods 116. The convex rod is at one end of the limiting rods 116. Push the first push block 103 to move according to the dilation progress. After the movable block 104 drives the blade 106 to move to the required position, push the second push block 113 back. The convex rod is embedded between the two limiting rods 116 to fix the convex rod. The movable block 104 is fixed at the current position. Press the frame body 1123 to make the top surface of the frame body 1123 flush with the top of the transmission wheel 111. Dial the transmission wheel 111 to rotate. The transmission wheel 111 drives the transmission shaft 108 to rotate to drive the guide block 107 to move, adjusting the part of the blade 106 exposed from the accommodation groove. After the adjustment of the blade 106 is completed, release the frame body 1123. The second spring 1121 pushes the fixed block 112 to move towards the first through cavity. The fixed block 112 abuts against the transmission shaft 108 to fix the transmission shaft 108. Continue to push the pipe body 101, and use the blade 106 to cut the skin, enabling the dilator to continue to dilate.
[0047] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above utility model concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the embodiments of the present disclosure that have similar functions.
Claims
1. A dilator for ECMO surgery, characterized in that: The utility model comprises a tube body and a blade. The tube body is a conical structure and a receiving groove for the blade to extend into is arranged on the tube body.
2. The dilator for ECMO surgery according to claim 1, characterized in that: The length of the blade is smaller than the length of the receiving slot, and the blade can move in the receiving slot.
3. The dilator for ECMO surgery according to claim 1, characterized in that: A movable block is arranged in the accommodating groove, a mounting block is arranged on the movable block, the blade is arranged on the mounting block, and the mounting block can move relative to the movable block.
4. The dilator for ECMO surgery according to claim 3, characterized in that: A connecting block is provided at the bottom of the installation block, and a connecting groove corresponding to the connecting block is provided on the movable block, and the connecting block can move in the connecting groove.
5. The dilator for ECMO surgery according to claim 4, characterized in that: The movable block is provided with a first movable cavity communicated with the connecting groove, a guide block is provided in the first movable cavity, an inclined surface is provided on the guide block, and a transmission shaft for driving the guide block to move is provided on the movable block.
6. The dilator for ECMO surgery according to claim 5, characterized in that: A first movable groove is provided on the side wall of the accommodating groove, a first push rod is provided on the side wall of the movable block, and the first push rod extends out from the first movable groove; a first through cavity is provided on the first push rod, and the transmission shaft is passed through the first through cavity.
7. The dilator for ECMO surgery according to claim 6, characterized in that: A first push block is provided at one end of the first push rod, and a transmission wheel which cooperates with the transmission shaft is provided on the first push block, and the transmission wheel protrudes from the top surface of the first push block.
8. The dilator for ECMO surgery according to claim 7, characterized in that: The first push block is provided with a second movable cavity communicated with the first through cavity, the second movable cavity is provided with a fixed block, the bottom of the fixed block is provided with a second spring, the top of the fixed block is provided with a first connecting rod, the top of the first connecting rod is provided with a frame, when the fixed block is against the transmission shaft, the frame is located above the transmission wheel.
9. The dilator for ECMO surgery according to claim 7, characterized in that: A third movable cavity is provided on the first push rod, a movable rod is provided in the third movable cavity, a convex rod is provided at the bottom of the movable rod, a groove corresponding to the convex rod is provided on the inner wall of the first movable groove, a plurality of limiting rods are provided in the groove, the length of the convex rod is smaller than the width of the groove, the length of the limiting rod is smaller than the width of the groove, and a second push block is provided on the first push block for pushing the movable rod to move.
10. The dilator for ECMO surgery according to claim 1, characterized in that: A baffle is provided in the accommodating groove, a accommodating cavity corresponding to the baffle is provided on the side wall of the accommodating groove, a second through cavity is provided at one end of the accommodating groove, a second connecting rod is provided at one end of the baffle, the second connecting rod is passed through the second through cavity, and a third push block is provided at one end of the second connecting rod.