A tissue retractor
By designing the first and second retraction structures of S-shaped articulated first and second retraction structures, the tissue retractors with inward recessed middle of the retraction and limiting structure, the problems of line-of-visibility occlusion, tissue slipping and operation difficulty of existing surgical forceps when cleaning the seventh group lymph nodes, and a good visual field and safe operation process are achieved.
Patent Information
- Application Number
- CN202420494579.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-14
AI Technical Summary
When dissipating the 7th group lymph nodes, the existing surgical forceps have narrow and sharp tips, which easily scratch the surrounding tissues, and can easily block the doctor's vision during operation, and the bronchials and other bronchials are easily slipped.
A tissue retractor is designed, including a first pulling structure, a second pulling structure and a pulling opening. The two pulling structures are hinged and S-shaped. The middle part of the pulling opening is recessed inwardly, and a limiting structure is provided to fix the opening angle to ensure a good field of view and prevent tissue from slipping.
Through the S-shaped structure, the hands do not block the line of sight, maintain a good field of view, and reduce operation difficulty; the design of the pull-out prevents bronchial slippage, and the limit structure ensures that the pull-out end is always open, reducing surgical risks.
Smart Images
Figure CN222693427U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a tissue retractor. Background Art
[0002] The seventh group of lymph nodes are the subcarinal lymph nodes. The carina is the location where the left and right main bronchi bifurcate. The range of the seventh group of lymph nodes is defined as: located at the end of the tracheal carina, extending to the end of the lower edge of the right middle lobe bronchus on the right side, and extending to the end of the upper edge of the left lower lobe bronchus on the left side. Lymph node metastasis is one of the metastatic pathways of lung cancer. The purpose of clearing lymph nodes during lobectomy is to conduct a comprehensive assessment of malignant tumors in order to formulate the next treatment plan and evaluate the prognosis. If the cleared lymph nodes are confirmed to have cancer cell metastasis by pathological examination, it means that the patient's lung cancer is no longer in the early stage. The internationally recognized lung cancer staging is the 8th edition TNM staging, one of the main indicators N (staging) is about lymph nodes; and the seventh group of lymph nodes has a very important position in the metastatic pathway of lung cancer, and is also of great significance for lung cancer staging.
[0003] The 7th group of lymph nodes is deep in the chest cavity, with the left and right bronchi on the left and right sides, and the esophagus and aorta on the upper part. When cleaning, surgical forceps are used to open the left bronchus, right bronchus, and the esophagus and aorta above to the sides to fully expose the 7th group of lymph nodes. The existing surgical forceps have narrow and sharp mouths on both sides, which can easily scratch the surrounding tissues (trachea, esophagus, aorta, increasing the risk of accidents) and easily cause the bronchi to slip from the front end of the forceps.
[0004] Although the existing surgical forceps have a slight curvature at the jaws, the hand-held portion is a straight line, which can easily block the doctor's sight during operation.
[0005] The utility model provides a tissue retractor in view of the above problems. Utility Model Content
[0006] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:
[0007] A tissue retractor comprises a first retractor structure, a second retractor structure and a retractor head; the first retractor structure and the second retractor structure are hinged, the first retractor structure and the second retractor structure are both S-shaped, and the direction of the S-shape is perpendicular to the plane on which the first retractor structure and the second retractor structure move; two retractor heads are provided, the retractor heads are respectively provided at the same end of the first retractor structure and the second retractor structure, the retractor heads are fixedly connected to the first retractor structure and the second retractor structure, and the middle part of the retractor head is recessed between the first retractor structure and the second retractor structure; when the retractor is stretched, the bronchial slippage can be prevented, and the first retractor structure and the second retractor structure are provided in an S-shape to ensure that the hand will not block the line of sight of the retractor head part during operation, so as to ensure that a good field of vision can be maintained during operation, and tissue slippage can be discovered and operated in time at the first time, thereby reducing the difficulty of operation for medical staff.
[0008] Furthermore, the first retraction structure and the second retraction structure both have an operating end and a retraction end; the retraction head is arranged at the retraction end.
[0009] Furthermore, the operating ends of the first retracting structure and the second retracting structure are provided with operating rings, and the operating rings are elliptical and can be put on the fingers of medical staff for operation, which is convenient to use.
[0010] Furthermore, the operating ring is integrally connected to the first retracting structure and the second retracting structure respectively, and the connection is a smooth connection.
[0011] Furthermore, the retraction head is configured as an arc-shaped plate, the connection end of the arc-shaped plate with the first retraction structure and the second retraction structure is the proximal end, the end opposite to the proximal end is the distal end, and the arc-shaped plate is bent between the proximal end and the distal end toward the direction between the first retraction structure and the second retraction structure; the above configuration ensures that the esophagus, bronchus and aorta can be stuck in the arc-shaped plate to prevent them from falling out during operation and affecting the progress of the operation.
[0012] Furthermore, the tissue retractor also includes a limiting structure, which is arranged near the operating end. The limiting structure includes a limiting bar, the first end of which is arranged on the second retracting structure, and the limiting bar is rotatably connected to the second retracting structure; a ratchet inclined toward the direction of the second retracting structure is arranged at the upper end of the limiting bar, and at least one ratchet is arranged.
[0013] Furthermore, the limiting strip is an arc-shaped structure that bends downward.
[0014] Furthermore, a channel is arranged at the corresponding position of the first retraction structure, the limit strip passes through the channel, and a ratchet adapted to the limit strip is arranged in the channel. The above arrangement ensures that the operating ends of the first retraction structure and the second retraction structure can only approach but not move away, so that the retraction ends always remain in an open state.
[0015] Furthermore, the limiting structure also includes a support plate, which is arranged at the lower part of the limiting bar near the second retraction structure. The support plate can support the limiting bar and the pawl in the channel to lock it, preventing the operating ends of the first retraction structure and the second retraction structure from moving in opposite directions, causing the retraction end distance to become smaller.
[0016] Furthermore, a cavity is provided in the second pulling structure near the lower end of the support sheet, a spring and a moving block are provided in the cavity, a connecting rod is provided on the outside of the moving block, the connecting rod extends out in the cavity and passes through the support sheet, an elastic block is provided at the other end of the connecting rod, and external force applied in the direction of the operating end can make the elastic block move downward, and the elastic block automatically returns to its original position after the external force is removed. When the limit bar is manually pressed, the limit bar moves toward the operating end, the support sheet is disengaged from the ratchet in the channel, and the operating ends of the first traction structure and the second traction structure can move in opposite directions.
[0017] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure; by setting the first retraction structure and the second retraction structure to be S-shaped, it is ensured that the hand will not block the line of sight of the retraction head part during operation, and a good field of vision can be maintained during operation, and tissue slippage can be discovered and operated in time at the first time, reducing the difficulty of operation for medical staff; by setting the retraction head to be concave inward in the middle, it is ensured that the esophagus, bronchus and aorta can be stuck in the arc plate to prevent them from falling out during operation and affecting the progress of the operation; by setting the limiting structure, it is ensured that the opening angle of the first retraction structure and the second retraction structure can be fixed, which is beneficial to the operation of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the structure of the first retraction structure and the retraction head in the utility model;
[0020] Figure 3 It is a schematic diagram of the structure of the second retraction structure and the retraction head in the utility model;
[0021] Figure 4 It is a schematic cross-sectional structure diagram of the elastic block of the utility model;
[0022] Figure 5 It is a schematic diagram of the overall structure of another embodiment of the retraction head of the utility model;
[0023] Figure 6 It is a schematic structural diagram of another embodiment of the retraction head of the utility model, in which the first retraction structure cooperates with the retraction head;
[0024] Figure 7It is a schematic structural diagram of another embodiment of the retraction head of the utility model, in which the second retraction structure cooperates with the retraction head;
[0025] In the figure, 1. first retraction structure; 2. second retraction structure; 3. retraction head; 4. operating ring; 5. limit strip; 6. channel; 7. support plate; 8. cavity; 9. spring; 10. moving block; 11. elastic block. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Example 1
[0028] Please refer to Figure 1-4 A tissue retractor in this embodiment includes a first retractor structure 1, a second retractor structure 2 and a retractor head 3; the first retractor structure 1 and the second retractor structure 2 are hinged, and the first retractor structure 1 and the second retractor structure 2 are both S-shaped, and the direction of the S is perpendicular to the plane on which the first retractor structure 1 and the second retractor structure 2 move; two retractor heads 3 are provided, and the retractor heads 3 are respectively provided at the same end of the first retractor structure 1 and the second retractor structure 2, and the retractor head 3 is fixedly connected to the first retractor structure 1 and the second retractor structure 2, and the middle part of the retractor head 3 is recessed between the first retractor structure 1 and the second retractor structure 2; when the bronchus is stretched, it can prevent bronchial slippage, and the first retractor structure 1 and the second retractor structure 2 are set in an S-shape to ensure that the hand will not block the line of sight of the retractor head 3 during operation, so as to ensure that a good field of vision can be maintained during operation, and tissue slippage can be discovered and operated in time at the first time, thereby reducing the difficulty of operation for medical staff.
[0029] In some embodiments, the first retraction structure 1 and the second retraction structure 2 both have an operating end and a retraction end; and the retraction head 3 is disposed at the retraction end.
[0030] The operating ends of the first retracting structure 1 and the second retracting structure 2 are provided with operating rings 4. The operating rings 4 are oval in shape and can be put on the fingers of medical staff for operation, which is convenient to use.
[0031] The operating ring 4 is integrally connected to the first retracting structure 1 and the second retracting structure 2 respectively, and the connection is smooth.
[0032] In some embodiments, the retraction head 3 is configured as an arc-shaped plate, the connection end of the arc-shaped plate with the first retraction structure 1 and the second retraction structure 2 is the proximal end, and the end opposite to the proximal end is the distal end, and the arc-shaped plate is bent between the proximal end and the distal end toward the direction between the first retraction structure 1 and the second retraction structure 2; the above configuration ensures that the esophagus, bronchi and aorta can be stuck in the arc-shaped plate to prevent them from falling out during operation and affecting the progress of the operation.
[0033] Please refer to Figure 3 The tissue retractor also includes a limiting structure, which is arranged near the operating end. The limiting structure includes a limiting strip 5, a first end of which is arranged on the second retracting structure 2, and the limiting strip 5 is rotatably connected to the second retracting structure 2; a ratchet inclined toward the second retracting structure 2 is arranged at the upper end of the limiting strip 5, and at least one ratchet is arranged.
[0034] The limiting strip 5 is an arc-shaped structure that bends downward.
[0035] Please refer to Figure 2 A channel 6 is set at the corresponding position of the first retraction structure 1, and the limiting strip 5 passes through the channel 6. A ratchet adapted to the limiting strip 5 is set in the channel 6. The above arrangement ensures that the operating ends of the first retraction structure 1 and the second retraction structure 2 can only approach but not move away, so that the retraction ends always remain in an open state.
[0036] The limiting structure also includes a support plate 7, which is arranged at the lower part of the limiting strip 5 near the second retraction structure 2. The support plate 7 can support the limiting strip 5 and the ratchet in the channel 6 to lock, preventing the operating ends of the first retraction structure 1 and the second retraction structure 2 from moving in the opposite direction, causing the retraction end distance to become smaller.
[0037] A cavity 8 is set in the second pulling structure near the lower end of the support piece 7, and a spring 9 and a moving block 10 are set in the cavity 8. A connecting rod is set on the outside of the moving block 10, and the connecting rod extends out of the cavity 8 and passes through the support piece 7. An elastic block 11 is set at the other end of the connecting rod. Pressing in the direction of the operating end can make the elastic block 11 move downward, and the elastic block 11 automatically returns to its original position after releasing. When the limit strip 5 is pressed manually, the limit strip 5 moves toward the operating end, the support piece 7 is disengaged from the ratchet in the channel 6, and the operating ends of the first retraction structure 1 and the second retraction structure 2 can move in opposite directions.
[0038] In some embodiments, the cavity 8 is cylindrical in shape, the movable block 10 is a sphere, the spring 9 pushes the sphere to the top of the cavity 8, and it will not move without human power. A through hole is set at the lower end of the support plate 7, and a notch is set on the second retraction structure 2 between the support plate 7 and the cavity 8. The connecting rod extends out of the notch, passes through the through hole of the support plate 7, and the end is connected to the elastic block 11.
[0039] Example 2
[0040] A tissue retractor in the present embodiment comprises a first retractor structure 1, a second retractor structure 2 and a retractor head 3; the first retractor structure 1 and the second retractor structure 2 are hinged, and the first retractor structure 1 and the second retractor structure 2 are both S-shaped, and the direction of the S-shape is perpendicular to the plane on which the first retractor structure 1 and the second retractor structure 2 move; two retractor heads 3 are arranged, and the retractor heads 3 are respectively arranged at the same end of the first retractor structure 1 and the second retractor structure 2, and the retractor head 3 is fixedly connected to the first retractor structure 1 and the second retractor structure 2, and the middle part of the retractor head 3 is recessed between the first retractor structure 1 and the second retractor structure 2; when the bronchus is stretched, it can prevent bronchial slippage, and the first retractor structure 1 and the second retractor structure 2 are arranged in an S-shape to ensure that the hand will not block the line of sight of the retractor head 3 during operation, so as to ensure that a good field of vision can be maintained during operation, and tissue slippage can be discovered and operated in time at the first time, thereby reducing the difficulty of operation for medical staff.
[0041] In some embodiments, the first retraction structure 1 and the second retraction structure 2 both have an operating end and a retraction end; and the retraction head 3 is disposed at the retraction end.
[0042] The operating ends of the first retracting structure 1 and the second retracting structure 2 are provided with operating rings 4. The operating rings 4 are oval in shape and can be put on the fingers of medical staff for operation, which is convenient to use.
[0043] The operating ring 4 is integrally connected to the first retracting structure 1 and the second retracting structure 2 respectively, and the connection is smooth.
[0044] In some embodiments, the retraction head 3 is configured as an arc-shaped plate, the connection end of the arc-shaped plate with the first retraction structure 1 and the second retraction structure 2 is the proximal end, and the end opposite to the proximal end is the distal end, and the arc-shaped plate is bent between the proximal end and the distal end toward the direction between the first retraction structure 1 and the second retraction structure 2; the above configuration ensures that the esophagus, bronchi and aorta can be stuck in the arc-shaped plate to prevent them from falling out during operation and affecting the progress of the operation.
[0045] The length between the retractor end and the "S-shaped" curved part can be set to different lengths to suit surgical needs. Different lengths can be set for use in different situations, while facilitating entry into the abdominal cavity.
[0046] The hinged joint between the first retracting structure 1 and the second retracting structure 2 is configured as a single joint;
[0047] In another embodiment, the hinge between the first retraction structure 1 and the second retraction structure 2 is configured as a double joint, similar to the surgical forceps in a laparoscope, which is operated at the end and can open or close the jaws at the head end. Because it belongs to the prior art, it will not be elaborated here.
[0048] Example 3
[0049] Please refer to Figure 5-7 On the basis of Example 1 or Example 2, this embodiment adds the following technical features: (the structure of the retraction head 3 is specifically set as follows): the retraction head 3 is set as an arc-shaped rod, the connecting end of the arc-shaped rod with the first retraction structure 1 and the second retraction structure 2 is the proximal end, and the end opposite to the proximal end is the distal end; the cross-sectional area of the arc-shaped rod is continuously reduced from the proximal end to the distal end;
[0050] From the proximal end to the distal end of the arc-shaped rod, the arc-shaped rod gradually moves away from the center of the first retractor structure 1 and the second retractor structure 2, and the middle part gradually approaches the center of the first retractor structure 1 and the second retractor structure 2. At the last third, the arc-shaped rod gradually moves away from the center of the first retractor structure 1 and the second retractor structure 2. When the operating ring 4 is opened, the above arrangement can ensure that the front end of the retractor head 3 is small enough to be able to extend into the gap between the esophagus, bronchus and aorta. Then, the operating ring 4 is closed, and the retractor head 3 can be opened, and the esophagus, bronchus and aorta can be prevented from falling.
[0051] The above-mentioned embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.
Claims
1. A tissue retractor, characterized in that: It includes a first retraction structure, a second retraction structure and a retraction head; the first retraction structure and the second retraction structure are hinged, the first retraction structure and the second retraction structure are both S-shaped, and the direction of the S is perpendicular to the plane on which the first retraction structure and the second retraction structure move; two retraction heads are provided, the retraction heads are respectively provided at the same end of the first retraction structure and the second retraction structure, the retraction head is fixedly connected to the first retraction structure and the second retraction structure, and the middle part of the retraction head is recessed between the first retraction structure and the second retraction structure.
2. The tissue retractor according to claim 1, characterized in that: The first retraction structure and the second retraction structure both have an operating end and a retraction end; the retraction head is arranged at the retraction end.
3. The tissue retractor according to claim 1, characterized in that: The operating ends of the first retracting structure and the second retracting structure are provided with operating rings, and the shape of the operating rings is elliptical.
4. The tissue retractor according to claim 3, characterized in that: The operating ring is integrally connected to the first retracting structure and the second retracting structure respectively, and the connection is smooth.
5. The tissue retractor according to claim 1, characterized in that: The retraction head is configured as an arc-shaped plate, the connecting end of the arc-shaped plate with the first retraction structure and the second retraction structure is the proximal end, the end opposite to the proximal end is the distal end, and the arc-shaped plate bends between the proximal end and the distal end toward the direction between the first retraction structure and the second retraction structure.
6. The tissue retractor according to claim 2, characterized in that: It also includes a limiting structure, which is arranged near the operating end. The limiting structure includes a limiting bar, a first end of which is arranged on the second traction structure, and the limiting bar is rotatably connected to the second traction structure; a ratchet inclined toward the direction of the second traction structure is arranged at the upper end of the limiting bar, and at least one ratchet is arranged.
7. The tissue retractor according to claim 6, characterized in that: The limiting strip is an arc-shaped structure that bends downward.
8. The tissue retractor according to claim 6 or 7, characterized in that: A channel is arranged at a corresponding position of the first retracting structure, the limiting strip passes through the channel, and a ratchet matched with the limiting strip is arranged in the channel.
9. The tissue retractor according to claim 8, characterized in that: The limiting structure also includes a support sheet, which is arranged at the lower part of the limiting bar close to the second pulling structure, and the support sheet can support the limiting bar to lock with the ratchet in the channel.
10. The tissue retractor according to claim 9, characterized in that: A cavity is set in the second pulling structure near the lower end of the support sheet, and a spring and a moving block are set in the cavity. A connecting rod is set on the outside of the moving block. The connecting rod extends out of the cavity and passes through the support sheet. An elastic block is set at the other end of the connecting rod. Applying external force toward the operating end can make the elastic block move downward. After the external force is removed, the elastic block automatically returns to its original position.