Internal jugular vein retractor

Abstract

The utility model discloses an internal jugular vein retractor, it includes two along the horizontal direction interval setting's pull rod, the rear end of two pull rods is fixed and forms the connecting end each other, the front end of two pull rods is curved and forms the arc bight downward, is equipped with the baffle between two arc bights, the baffle is fixed along the two sides of horizontal direction's two pull rods arc bight respectively, the baffle along the vertical direction's lower end extension and arc bight's end portion is flush, and the end portion of arc bight and the lower end surface of baffle are all smooth circular arc surface. The utility model provides an internal jugular vein retractor, when pulling internal jugular vein, it is difficult to cause internal jugular vein puncture, and the contact area with internal jugular vein is big, improves the pull contact range.

Description

Technical Field

[0001] This utility model relates to the technical field of surgical retractors, specifically an internal jugular vein retractor. Background Technology

[0002] Deep jugular vein-lymphatic anastomosis for Alzheimer's disease is an experimental surgical procedure designed to enhance the clearance of metabolic waste products (such as β-amyloid) from the brain by establishing an abnormal connection between the deep jugular veins and the lymphatic system. This technique is based on the "glymphatic system" theory, which posits that cerebrospinal fluid assists in the removal of neurotoxic substances via paravascular pathways, and that Alzheimer's patients may have lymphatic drainage disorders. The surgery uses microsurgical techniques to anastomose branches of the internal jugular vein with the cervical lymphatic vessels, attempting to improve the transport of brain metabolic products into the systemic circulation.

[0003] Lymphatic vessels are often located deep behind the deep jugular vein. During the operation, the internal jugular vein needs to be retracted to properly expose the lymphatic system. Currently, there is no special instrument for retracting the internal jugular vein. Scalp retractors are often used to retract the internal jugular vein. However, the tip of the scalp retractor is sharp, which poses a risk of puncturing the internal jugular vein. In addition, the existing scalp retractors only provide traction force in the rod part, and the contact range of traction is small, which cannot meet the traction requirements of the internal jugular vein. Utility Model Content

[0004] The present invention aims to at least partially solve one of the technical problems in the related art: to provide an internal jugular vein retractor that is less likely to puncture the internal jugular vein when it is pulled, and has a large contact area with the internal jugular vein, thereby increasing the range of traction contact.

[0005] Therefore, one objective of this utility model is to provide an internal jugular vein retractor, comprising two horizontally spaced traction rods, the rear ends of which are fixed together to form a connecting end. The front ends of the two traction rods are bent downwards to form arc-shaped hooks, and a baffle is provided between the two arc-shaped hooks. The baffle is fixed to the arc-shaped hooks of the two traction rods on both sides along the horizontal direction, and extends vertically downwards to be flush with the ends of the arc-shaped hooks. Furthermore, the ends of the arc-shaped hooks and the lower end surface of the baffle are both smooth arc surfaces. On the one hand, the baffle between the arc-shaped hooks of the two traction rods ensures that when the internal jugular vein is retracted, not only the two arc-shaped hooks but also the entire baffle is in contact with the internal jugular vein, resulting in a large contact area for traction. On the other hand, the smooth arc surfaces of the ends of the arc-shaped hooks and the lower edge of the baffle reduce damage to the internal jugular vein from sharp edges.

[0006] Preferably, the baffle is made of a flexible material.

[0007] Preferably, the baffle is an elastic baffle made of medical-grade rubber. The elastic baffle allows for a certain degree of stretching, resulting in a gentler traction force applied to the internal jugular vein when the baffle contacts and applies traction.

[0008] Preferably, the baffle has sleeves on both sides along the horizontal direction that match the arc-shaped hooks. The sleeves and the baffle are an integral structure, and the arc-shaped hooks are inserted into the sleeves from the upper end of the sleeves. The sleeves can be fitted onto the arc-shaped hooks to achieve a detachable connection between the baffle and the arc-shaped hooks. At the same time, the sleeves cover the ends of the arc-shaped hooks, further reducing contact damage that may be caused by the rigid arc-shaped hooks. In addition, the integral structure of the sleeves and baffles is also more conducive to the integral molding and processing of rubber parts.

[0009] Preferably, the lower end of the baffle has a tubular air bladder, the outer walls of both ends of the tubular air bladder smoothly transition to the outer walls of the corresponding sleeve, and the interior of the tubular air bladder has a sealed air cavity.

[0010] Preferably, the pull rod includes a fixed rod and a movable rod. One end of the two fixed rods is fixed to each other, and the other end of the fixed rod is hinged horizontally to one end of the corresponding movable rod. The other end of the movable rod is bent downward to form the arc-shaped hook. An abutment block is provided between the two movable rods. The abutment block is connected to the fixed rod and its position along the horizontal length direction is adjustable, so that the position where the abutment block abuts against the movable rod is adjustable. The hinge of the movable rod makes the distance between the two arc-shaped hooks adjustable, which improves versatility. In addition, by adjusting the position of the abutment block along the length direction, the elastic restoring force of the elastic baffle applied to the relative movement of the two movable rods can keep the two movable rods clamped to the abutment block. Thus, the position of the two movable rods can change with the position of the abutment block.

[0011] Preferably, the two fixed rods are parallel to each other, and a connecting seat is provided between the two fixed rods. A guide rod is provided between the abutting block and the connecting seat. One end of the guide rod is fixedly connected to the abutting block, and the other end of the guide rod extends along the length direction and slides in cooperation with the guide hole on the connecting seat. The connecting seat is provided with a locking nut for locking the guide rod. The position of the abutting block in the width direction can be restricted by the connecting seat and the guide rod, so that the abutting block can only move in the length direction. With the locking and unlocking of the locking nut, the abutting block can be maintained in the current position after being adjusted to the desired position along the length direction.

[0012] Preferably, the connecting seat is sleeved around the two fixed rods and slides along their length; when the two movable rods clamp the abutment block, the connecting seat moves toward the abutment block until it abuts against the outer wall of the movable rod, and the locking nut locks the guide rod. The connecting seat is also configured to move along its length, thus allowing the positions of the two movable rods to be adjusted first, then the position of the abutment block to be moved, and finally the connecting seat to be moved, thus locking the position of the abutment block.

[0013] Preferably, the connecting seat has an abutting surface on its front end face facing the abutting block for abutting the movable rod.

[0014] Preferably, the movable rod has multiple recesses on its inner side corresponding to the abutment block, and the recesses are spaced apart along the length of the movable rod, and the recesses on the two movable rods are symmetrically arranged. The two ends of the abutment block are recessed inward along the width direction to form a concave arc surface that matches the movable rod, and the concave arc surface extends circumferentially along the center line of the abutment block so that the outline S of the cross-section of the concave arc surface in the horizontal direction is an outwardly convex arc.

[0015] The above technical solution has the following advantages or beneficial effects: First, a baffle is provided between the arc-shaped hooks of the two traction rods. When traction is applied to the patient's internal jugular vein, not only do the two arc-shaped hooks contact the internal jugular vein, but the entire baffle also contacts the internal jugular vein, resulting in a large traction contact area for the internal jugular vein. Second, the ends of the arc-shaped hooks and the lower edge of the baffle are made of smooth arc surfaces, thus reducing damage to the internal jugular vein from sharp edges. Third, when an elastic baffle is used, it can have a certain degree of elasticity and extensibility, making the traction force applied to the internal jugular vein by the baffle more gradual when it contacts the internal jugular vein and provides traction force. Finally, the movable rod in the traction rod is made movable, thus allowing the distance between the two arc-shaped hooks to be adjusted, improving the versatility of the retractor.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is an axonometric view of the internal jugular vein retractor of this utility model.

[0018] Figure 2 This is a top view of the internal jugular vein retractor of this utility model.

[0019] Figure 3 This is a side view of the internal jugular vein retractor of this utility model.

[0020] Figure 4 for Figure 3A cross-sectional view along the "AA" direction.

[0021] Figure 5 for Figure 4 A magnified view of a portion of region "B".

[0022] Figure 6 for Figure 4 A magnified view of a portion of the "C" region.

[0023] Figure 7 This is a schematic diagram of the abutment block in this utility model.

[0024] Figure 8 This is a schematic diagram of the structure of the baffle plate in this utility model.

[0025] Figure 9 for Figure 8 A schematic diagram of the internal structure of the middle baffle.

[0026] Among them, 1. Pull rod; 2. Connecting end; 3. Arc hook; 4. Baffle; 5. Sleeve; 6. Tubular airbag; 7. Fixed rod; 8. Movable rod; 8.1. Recess; 9. Abutting block; 9.1. Concave arc surface; 10. Connecting seat; 10.1. Abutting surface; 11. Guide pull rod; 12. Locking nut. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] The internal jugular vein retractor according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] In the following text, the horizontal direction refers to Figure 2 The direction shown is where the paper is located; the width direction refers to... Figure 2 The left-right direction is shown; the length direction is usually understood as follows if the length direction of a component is not explicitly stated. Figure 2 The up and down directions are shown.

[0030] This utility model provides an internal jugular vein retractor, as shown in the figure, which includes two traction rods 1 spaced apart in the horizontal direction, specifically as follows: Figure 2Two traction rods 1 are spaced apart along the width direction. The rear ends of the two traction rods 1 are fixed to each other to form a connecting end 2 for connecting external objects. The front ends of the two traction rods 1 are bent downwards to form arc-shaped hooks 3. A baffle 4 is provided between the two arc-shaped hooks 3. The baffle 4 is fixed to the arc-shaped hooks 3 on both sides along the horizontal direction. The lower end of the baffle 4 extends vertically and is flush with the end of the arc-shaped hook 3. Both the end of the arc-shaped hook 3 and the lower end surface of the baffle 4 are smooth arc surfaces. That is, the end of the arc-shaped hook 3 is a smooth spherical surface, and the connection between the lower end surface of the baffle 4 and the side of the baffle is also a gentle arc transition, reducing the damage to the internal jugular vein from sharp edges during traction of the patient's internal jugular vein.

[0031] Based on the above-mentioned preferred embodiment of the baffle 4, the baffle 4 is made of a flexible material.

[0032] Specifically, the baffle 4 is an elastic baffle 4 made of medical-grade rubber. This medical-grade rubber is a conventional material in the medical field and will not be described in detail here.

[0033] See Figures 8-9 As shown, the baffle 4 has sleeves 5 on both sides along the horizontal direction that match the arc-shaped hooks 3. The sleeves 5 and the baffle 4 are an integral structure. The top of the sleeve 5 has an opening. The arc-shaped hooks 3 are inserted into the sleeve 5 from the opening at the top end of the sleeve 5, thereby completing the connection between the baffle 4 and the arc-shaped hooks 3. At this time, the end of the arc-shaped hooks 3 is covered inside the sleeve 5.

[0034] Preferably, the lower end of the baffle 4 has a tubular airbag 6, the outer walls of both ends of the tubular airbag 6 smoothly transition to the outer walls of the corresponding sleeve 5, the interior of the tubular airbag 6 has a sealed air cavity, and the two ends of the air cavity are adjacent to the bottom of the sleeve 5.

[0035] Of course, in the above embodiments, the baffle 4 can also be fixedly connected to the arc-shaped hook 3, including but not limited to the baffle 4 made of rubber being fixedly connected to the arc-shaped hook 3 made of metal through a vulcanization bonding process.

[0036] Based on the preferred embodiment of the pull rod 1 in the above embodiments: See Figures 1-6As shown, the pull rod 1 includes a fixed rod 7 and a movable rod 8. One end of the two fixed rods 7 is fixed to each other and the two fixed rods 7 are arranged parallel to each other. The other end of the fixed rod 7 is hinged to one end of its corresponding movable rod 8, so that the movable rod 8 can swing in the horizontal direction. The other end of the movable rod 8 is bent downward to form the arc-shaped hook 3. An abutment block 9 is provided between the two movable rods 8. The dimension of the abutment block 9 in the width direction is larger than the distance between the two fixed rods 7. The abutment block 9 is connected to the fixed rod 7 and its position in the horizontal length direction is adjustable, so that the position of the abutment block 9 against the movable rod 8 is adjustable. In this embodiment, the position of the abutment block 9 in the length direction is adjustable. Therefore, when the two movable rods 8 move relative to each other until they abut against the two ends of the abutment block 9, the swing angle of the movable rod 8 will change with the position of the abutment block 9. By changing the swing angle of the two movable rods 8 relative to the fixed rod 7 through the abutment block 9, the relative distance between the arc-shaped hooks 3 at the ends of the two movable rods 8 can be adjusted.

[0037] Preferably, the two fixing rods 7 are parallel to each other, and a connecting seat 10 is provided between the two fixing rods 7. The connecting seat 10 is fixedly connected to the fixing rods 7. A screw is provided between the abutting block 9 and the connecting seat 10. The screw is a round-headed screw. The threaded end of the screw passes through the abutting block 9 along the length direction and is threadedly engaged with the threaded hole on the connecting seat 10. The diameter of the other end of the screw with the round head is larger than the through hole on the abutting block 9, so that the other end of the screw with the round head abuts against the side of the abutting block 9 away from the connecting seat 10.

[0038] Preferably, the two fixed rods 7 are parallel to each other, and a connecting seat 10 is provided between the two fixed rods 7. A guide rod 11 is provided between the abutment block 9 and the connecting seat 10. One end of the guide rod 11 is fixedly connected to the abutment block 9, and the other end of the guide rod 11 extends along the length direction and slides in cooperation with the guide hole on the connecting seat 10. The connecting seat 10 is provided with a locking nut 12 for locking the guide rod 11. The end of the guide rod 11 away from the abutment block 9 has an external thread that is threadedly connected to the locking nut 12. In actual use, the relative positions of the two movable rods 8 can be adjusted arbitrarily so that the distance between the two arc-shaped hooks 3 meets the surgical requirements. Then, the abutment block 9 is moved so that both ends of the abutment block 9 abut against the inner sides of the two movable rods 8. At this time, under the action of the elastic restoring force of the elastic baffle 4, the two movable rods 8 clamp the abutment block 9. Then, the locking nut 12 is screwed on so that the guide rod 11 and the connecting seat 10 are limited along the length direction.

[0039] One of the preferred examples based on this connector 10: The connecting seat 10 is fixedly connected to the fixing rod 7. The guide rod 11 is slidably engaged with the guide hole on the connecting seat 10. The end of the guide rod 11 passes through the guide hole and protrudes outside the guide hole. The exposed end of the guide rod 11 is a screw with external threads on its outer side wall. The locking nut 12 is threadedly engaged with the screw portion of the guide rod 11. By turning the locking nut 12, the position of the locking nut 12 relative to the screw is changed, thereby creating a limit on the length of the abutment block 9 when the locking nut 12 abuts against the connecting seat 10. Furthermore, locking nuts 12 are provided on both sides of the connecting seat 10 on the guide rod 11.

[0040] A second preferred example based on the connector 10: The connecting seat 10 is sleeved on the two fixed rods 7 and slides along the length of the fixed rods 7; when the two movable rods 8 clamp the abutment block 9, the connecting seat 10 moves toward the position of the abutment block 9 until the connecting seat 10 abuts against the outer wall of the movable rod 8, and the locking nut 12 locks the guide rod 11. The connecting seat 10 is provided with a positioning nut for fastening the connecting seat 10 and the fixed rod 7. Specifically, the connecting seat 10 has a threaded hole that communicates with the through hole where the fixed rod 7 is located. The screw part of the positioning nut is threaded into the threaded hole. The positioning nut can rotate in the forward or reverse direction so that the positioning nut abuts against or disengages from the fixed rod 7.

[0041] Preferably, see Figure 6 As shown, the connecting seat 10 has an abutting surface 10.1 on the front end face of the abutting block 9 for abutting the movable rod 8.

[0042] Preferably, see Figure 1 , Figure 2 , Figure 5 As shown, the movable rod 8 has multiple recesses 8.1 on its inner side corresponding to the abutment block 9. These recesses 8.1 are spaced apart along the length of the movable rod 8, and are symmetrically arranged on two movable rods 8. The abutment block 9 has inwardly recessed ends along its width to form grooves that match the movable rod 8. The longitudinal section of the groove is an inwardly concave arc surface 9.1, which extends circumferentially along the centerline of the abutment block 9, so that the outline S of the horizontal cross-section of the concave arc surface 9.1 is an outwardly convex arc. In this embodiment, because the concave arc surface 9.1 extends around the centerline of the abutment block 9, the outline S of the groove cross-section is arc-shaped, as shown... Figure 5 As shown, when the concave arc surface 9.1 abuts against the pit 8.1, it can form a limit along the length direction, thereby reducing the sliding offset of the abutment block 9 along the length direction.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0044] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A jugular vein retractor, characterized in that: It includes two horizontally spaced traction rods (1), the rear ends of the two traction rods (1) are fixed to each other to form a connecting end (2), the front ends of the two traction rods (1) are bent downward to form an arc hook (3), a baffle (4) is provided between the two arc hooks (3), the baffle (4) is fixed to the arc hooks (3) of the two traction rods (1) on both sides along the horizontal direction, the baffle (4) extends to the lower end along the vertical direction and is flush with the end of the arc hook (3), and the end of the arc hook (3) and the lower end surface of the baffle (4) are both smooth arc surfaces.

2. The internal jugular vein retractor according to claim 1, characterized in that: The baffle (4) is made of a flexible material.

3. The internal jugular vein retractor according to claim 2, characterized in that: The baffle (4) is an elastic baffle (4) made of medical rubber.

4. The jugular vein retractor according to claim 3, characterized in that: The baffle (4) has sleeves (5) on both sides along the horizontal direction that match the arc hook (3). The sleeve (5) and the baffle (4) are an integral structure. The arc hook (3) is inserted into the sleeve (5) from the tube opening at the upper end of the sleeve (5).

5. The internal jugular vein retractor according to claim 4, characterized in that: The lower end of the baffle (4) has a tubular airbag (6), the outer walls of both ends of the tubular airbag (6) smoothly transition to the outer walls of the corresponding sleeve (5), and the interior of the tubular airbag (6) has a sealed air cavity.

6. The internal jugular vein retractor according to any one of claims 3-5, characterized in that: The traction rod (1) includes a fixed rod (7) and a movable rod (8). One end of the two fixed rods (7) is fixed to each other, and the other end of the fixed rod (7) is hinged to one end of the corresponding movable rod (8) in the horizontal direction. The other end of the movable rod (8) is bent downward to form the arc hook (3). An abutment block (9) is provided between the two movable rods (8). The abutment block (9) is connected to the fixed rod (7) and its position is adjustable in the horizontal length direction so that the position of the abutment block (9) against the movable rod (8) is adjustable.

7. The internal jugular vein retractor according to claim 6, characterized in that: Two fixed rods (7) are parallel to each other, and a connecting seat (10) is provided between the two fixed rods (7). A guide rod (11) is provided between the abutting block (9) and the connecting seat (10). One end of the guide rod (11) is fixedly connected to the abutting block (9), and the other end of the guide rod (11) extends along the length direction and slides in cooperation with the guide hole on the connecting seat (10). A locking nut (12) for locking the guide rod (11) is provided on the connecting seat (10).

8. The internal jugular vein retractor according to claim 7, characterized in that: The connecting seat (10) is sleeved on the two fixed rods (7) and slides along the length direction with the fixed rods (7); when the two movable rods (8) clamp the abutment block (9), the connecting seat (10) moves toward the position of the abutment block (9) until the connecting seat (10) abuts against the outer side wall of the movable rod (8), and the locking nut (12) locks the guide rod (11).

9. The internal jugular vein retractor according to claim 8, characterized in that: The connecting seat (10) has an abutting surface (10.1) on the front end face of the abutting block (9) for abutting the movable rod (8).

10. The internal jugular vein retractor according to claim 7, characterized in that: The movable rod (8) has multiple recesses (8.1) on its inner side corresponding to the abutment block (9). Each recess (8.1) is spaced apart along the length of the movable rod (8), and the recesses (8.1) on the two movable rods (8) are symmetrically arranged. The two ends of the abutment block (9) are recessed inward along the width direction to form a concave arc surface (9.1) that matches the movable rod (8). The concave arc surface (9.1) extends circumferentially along the center line of the abutment block (9), so that the outline S of the cross section of the concave arc surface (9.1) in the horizontal direction is an outwardly convex arc.

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