Surgical field expander for minimally invasive surgery in orthopedics department

Abstract

The utility model discloses a surgical field expander for minimally invasive surgery in orthopedics department, which comprises an expansion component, an expansion frame, a ring and an expansion head, the ring is arranged on the outer side of the expansion frame, and the expansion head is fixed on the outer side of the expansion frame; the adjusting assembly is arranged on the outer side of the expansion frame and comprises a fine adjustment piece, a connecting piece, a limiting piece and a fastening bolt. The wound dilator has the advantages that the dilation heads are inserted into a wound, then fingers are inserted into the finger rings to drive the first frame body and the second frame body to rotate to be opened and closed, the dilation head at the other end is driven to be opened and closed to dilate the wound, the rotating rod can be rotated through the cam, so that the gear is rotated, and the gear is meshed with the arc-shaped rack to rotate. The first frame body and the second frame body are driven to rotate, and the opening and closing degree between the first frame body and the second frame body is adjusted, so that the expansion degree of a wound is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an operation field expander used for orthopedic minimally invasive surgery. Background Art

[0002] Minimally invasive surgery refers to surgery that uses modern medical devices such as laparoscopes and thoracoscopes and related equipment to perform surgery by making only a few tiny surgical openings. Orthopedic minimally invasive surgery is the application of minimally invasive surgical technology in the field of orthopedics. Through special surgical approaches, assisted by some special equipment or new instruments, such as endoscopes, puncture needles, special automatic retractors and internal fixation equipment, etc., it is possible to achieve the effects of less tissue trauma, high precision and postoperative recovery. The Chinese patent application number is: CN202221360561.9, a general surgical incision expansion device, the fixing plate of the device is attached to the patient's body surface, and it is adhered with tape. No additional support is required, and the size of the incision expansion can be adjusted. There is a large circular field of view in the center of the device. A general surgical incision expansion device, but the above device needs to be fixed on the patient's body, which will cause discomfort to the patient and is not convenient for medical staff to operate with one hand. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above-mentioned and / or existing problems in the surgical field expander used for orthopedic minimally invasive surgery, the present utility model is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the prior art requires the device to be fixed on the patient's body, which causes discomfort to the patient and is inconvenient for medical staff to operate with one hand.

[0006] To solve the above technical problems, the utility model provides the following technical solutions: a surgical field expander for orthopedic minimally invasive surgery, comprising an expansion component, including an expansion frame, a finger ring and an expansion head, the finger ring is arranged on the outside of the expansion frame, the expansion head is fixed on the outside of the expansion frame, and; an adjustment component, the adjustment component is arranged on the outside of the expansion frame, including a fine-tuning part, a connecting part, a limiting part and a fastening bolt, the fine-tuning part is arranged on the outside of the expansion frame, the connecting part is arranged on the outside of the fine-tuning part, the limiting part is arranged on the outside of the connecting part, and the fastening bolt is arranged on the outside of the expansion frame.

[0007] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, wherein: the expansion frame includes a first frame body and a second frame body, and the first frame body and the second frame body are rotatably connected.

[0008] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, wherein: the outer sides of the first frame and the second frame are fixedly connected with finger rings and expansion heads.

[0009] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, the end of the expansion head is arranged in an arc shape.

[0010] As a preferred solution of the surgical field expander for minimally invasive orthopedic surgery described in the utility model, the fine-tuning part includes an arc-shaped rack, a groove and a gear, the arc-shaped rack is fixedly connected to the outside of the first frame, the groove is opened inside the second frame, and the gear rotates inside the groove.

[0011] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, the connecting part includes a connecting block, a connecting column and a rotating rod, the connecting block is fixed to the outside of the second frame, the connecting column rotates inside the connecting block, and the rotating rod rotates on the top of the connecting column.

[0012] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, wherein: the connecting member also includes a cam, and the cam is fixed on the outside of the rotating rod.

[0013] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, the limiting member includes a spring, a connecting plate and an insertion rod, the spring is fixed on the outside of the second frame, the connecting plate is fixed on the outside of the spring, and the insertion rod is fixed on the outside of the connecting plate.

[0014] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, wherein: the fastening bolt is threadedly connected to the outer side of the second frame.

[0015] As a preferred solution of the surgical field expander for orthopedic minimally invasive surgery described in the utility model, wherein: the expansion frame also includes a rubber pad, and the rubber pad is fixed on the outer side of the first frame.

[0016] The beneficial effects of the utility model are as follows: inserting the expansion head into the wound, and then inserting the finger into the finger ring to drive the first frame and the second frame to rotate and open and close relative to each other, driving the expansion head at the other end to open and close to expand the wound, and utilizing the cam to rotate the rotating rod, thereby rotating the gear, and utilizing the gear to mesh and rotate with the arc-shaped rack to drive the first frame and the second frame to rotate, and adjusting the opening and closing size between the first frame and the second frame, thereby adjusting the degree of expansion of the wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is the overall structural diagram of the surgical field expander used in minimally invasive orthopedic surgery.

[0019] Figure 2 This is the first structural diagram of the surgical field expander used in minimally invasive orthopedic surgery.

[0020] Figure 3 This is a second frame structure diagram of a surgical field expander used in minimally invasive orthopedic surgery.

[0021] Figure 4 This is a structural diagram of the fine-tuning parts of a surgical field expander used in minimally invasive orthopedic surgery.

[0022] Figure 5 This is a structural diagram of the connector of a surgical field expander used in minimally invasive orthopedic surgery.

[0023] Numbers in the figure: 100, expansion assembly; 101, expansion frame; 101a, first frame; 101b, second frame; 101c, rubber pad; 102, finger ring; 103, expansion head; 200, adjustment assembly; 201, fine-tuning part; 201a, arc-shaped rack; 201b, groove; 201c, gear; 202, connecting part; 202a, connecting block; 202b, connecting column; 202c, rotating rod; 203, limiting part; 203a, spring; 203b, connecting plate; 203c, plug rod; 204, fastening bolt. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example 1

[0028] Reference Figure 1 to Figure 5 , which is the first embodiment of the utility model, and this embodiment provides a surgical field expander for orthopedic minimally invasive surgery. The surgical field expander for orthopedic minimally invasive surgery includes an expansion component 100 and an adjustment component 200. The expansion component 100 is used to expand the wound, and the adjustment component 200 is used to adjust the expansion range of the expansion component 100.

[0029] The expansion assembly 100 includes an expansion frame 101 , a finger ring 102 and an expansion head 103 . The finger ring 102 is disposed on the outside of the expansion frame 101 , and the expansion head 103 is fixed on the outside of the expansion frame 101 .

[0030] The user inserts his finger into the finger ring 102 to adjust the expansion frame 101 to open or close, and uses the expansion head 103 to expand the wound.

[0031] The adjustment component 200 is arranged on the outside of the expansion frame 101, and includes a fine-tuning member 201, a connecting member 202, a limiting member 203 and a fastening bolt 204. The fine-tuning member 201 is arranged on the outside of the expansion frame 101, the connecting member 202 is arranged on the outside of the fine-tuning member 201, the limiting member 203 is arranged on the outside of the connecting member 202, and the fastening bolt 204 is arranged on the outside of the expansion frame 101.

[0032] The fine-tuning member 201 is used to fine-tune the opening of the expansion frame 101 , the connecting member 202 is used to drive the fine-tuning member 201 for adjustment, the limiting member 203 is used to adjust the fine-tuning member 21 , and the fastening bolt 204 is used to fasten and limit the expansion frame 101 .

[0033] Example 2

[0034] Reference Figure 1 , Figure 2 and Figure 3 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0035] Specifically, the expansion frame 101 includes a first frame body 101a and a second frame body 101b, and the first frame body 101a and the second frame body 101b are rotatably connected.

[0036] The first frame 101a and the second frame 101b rotate and open and close relative to each other, driving the expansion head 103 to move and expand the wound.

[0037] Specifically, the outer sides of the first frame 101a and the second frame 101b are fixedly connected with the finger ring 102 and the expansion head 103 .

[0038] The user inserts a finger into the finger ring 102 to drive the first frame 101a and the second frame 101b to rotate and open and close relative to each other, thereby driving the expansion head 103 at the other end to open and close to expand the wound.

[0039] Specifically, the end of the expansion head 103 is arranged in an arc shape.

[0040] The arc-shaped expansion head 103 can avoid secondary injury to the patient.

[0041] Specifically, the expansion frame 101 further includes a rubber pad 101c, and the rubber pad 101c is fixed on the outer side of the first frame body 101a.

[0042] The rubber pad 101c is used to separate the first frame 101a and the second frame 101b to prevent the first frame 101a and the second frame 101b from colliding and being damaged with each other.

[0043] Example 3

[0044] Reference Figure 3 , Figure 4 and Figure 5 , which is the third embodiment of the utility model, and this embodiment is based on the first two embodiments.

[0045] Specifically, the fine-tuning member 201 includes an arc-shaped rack 201a, a groove 201b and a gear 201c. The arc-shaped rack 201a is fixedly connected to the outside of the first frame 101a, the groove 201b is opened inside the second frame 101b, and the gear 201c rotates inside the groove 201b.

[0046] The gear 201c meshes and rotates with the arc-shaped rack 201a to drive the first frame 101a and the second frame 101b to rotate, and the opening and closing size between the first frame 101a and the second frame 101b is adjusted, thereby adjusting the expansion degree of the wound.

[0047] Specifically, the connecting member 202 includes a connecting block 202a, a connecting column 202b and a rotating rod 202c. The connecting block 202a is fixed to the outside of the second frame 101b, the connecting column 202b rotates inside the connecting block 202a, and the rotating rod 202c rotates on the top of the connecting column 202b.

[0048] The connecting column 202b rotates inside the connecting block 202a to drive the rotating rod 202c to rotate. The outer side of the rotating rod 202c is fixedly connected to the gear 201c. The gear 201c and the arc-shaped rack 201a can be driven to separate and combine by adjusting the position of the connecting column 202b. After the gear 201c is separated from the arc-shaped rack 201a, the first frame 101a and the second frame 101b can be quickly closed to cancel the expansion of the wound. When adjustment is needed, the gear 201c can be moved to engage with the arc-shaped rack 201a.

[0049] Specifically, the connecting member 202 further includes a cam 202d, and the cam 202d is fixed on the outer side of the rotating rod 202c.

[0050] The rotating rod 202c can be rotated by the cam 202d, thereby rotating the gear 201c.

[0051] Specifically, the limiting member 203 includes a spring 203a, a connecting plate 203b and an insert rod 203c, the spring 203a is fixed on the outside of the second frame 101b, the connecting plate 203b is fixed on the outside of the spring 203a, and the insert rod 203c is fixed on the outside of the connecting plate 203b.

[0052] After the rotating rod 202c drives the gear 201c to mesh with the arc-shaped rack 201a, the connecting plate 203b is pulled to drive the spring 203a to expand, and then the insertion rod 203c is inserted into the interior of the rotating rod 202c, and the rotating rod 202c and the gear 201c are limited by the insertion rod 203c.

[0053] Specifically, the fastening bolt 204 is threadedly connected to the outer side of the second frame 101b.

[0054] After the positions of the first frame 101a and the second frame 101b are determined, the fastening bolts 204 are tightened to contact the arc-shaped rack 201a to limit its position, thereby determining the position between the first frame 101a and the second frame 101b.

[0055] When in use, the user inserts the expansion head 103 into the wound, and then inserts the finger into the finger ring 102 to drive the first frame 101a and the second frame 101b to rotate and open and close relative to each other, and drive the expansion head 103 at the other end to open and close to expand the wound. The cam 202d can be used to rotate the rotating rod 202c, thereby rotating the gear 201c. The gear 201c is engaged and rotated with the arc-shaped rack 201a to drive the first frame 101a and the second frame 101b to rotate, and the opening and closing size between the first frame 101a and the second frame 101b is adjusted, thereby adjusting the expansion degree of the wound. The connecting column 202b rotates inside the connecting block 202a to drive the rotating rod 202c to rotate relative to the first frame 101a and the second frame 101b. 02c rotates, and the outer side of the rotating rod 202c is fixedly connected with a gear 201c. By adjusting the position of the connecting column 202b, the gear 201c and the arc-shaped rack 201a can be driven to separate and combine. After the gear 201c is separated from the arc-shaped rack 201a, the first frame 101a and the second frame 101b can be quickly closed to cancel the expansion of the wound. When adjustment is needed, the gear 201c is moved to mesh with the arc-shaped rack 201a. After the positions of the first frame 101a and the second frame 101b are determined, the fastening bolts 204 are tightened to contact the arc-shaped rack 201a to limit its position, thereby determining the position between the first frame 101a and the second frame 101b.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A surgical field expander for minimally invasive orthopedic surgery, characterized by: include, An expansion assembly (100) comprises an expansion frame (101), a finger ring (102) and an expansion head (103), wherein the finger ring (102) is arranged on the outside of the expansion frame (101), the expansion head (103) is fixed on the outside of the expansion frame (101), and; An adjustment component (200), the adjustment component (200) is arranged on the outside of the expansion frame (101), and comprises a fine-tuning component (201), a connecting component (202), a limiting component (203) and a fastening bolt (204), the fine-tuning component (201) is arranged on the outside of the expansion frame (101), the connecting component (202) is arranged on the outside of the fine-tuning component (201), the limiting component (203) is arranged on the outside of the connecting component (202), and the fastening bolt (204) is arranged on the outside of the expansion frame (101).

2. The surgical field expander for minimally invasive orthopedic surgery according to claim 1, characterized in that: The expansion frame (101) comprises a first frame body (101a) and a second frame body (101b), wherein the first frame body (101a) and the second frame body (101b) are rotatably connected.

3. The surgical field expander for orthopedic minimally invasive surgery according to claim 2, characterized in that: The outer sides of the first frame (101a) and the second frame (101b) are both fixedly connected with a finger ring (102) and an expansion head (103).

4. The surgical field expander for minimally invasive orthopedic surgery according to claim 3, characterized in that: The end of the expansion head (103) is arranged in an arc shape.

5. The surgical field expander for minimally invasive orthopedic surgery according to claim 2, characterized in that: The fine-tuning member (201) comprises an arc-shaped rack (201a), a groove (201b) and a gear (201c); the arc-shaped rack (201a) is fixedly connected to the outside of the first frame (101a); the groove (201b) is opened inside the second frame (101b); and the gear (201c) rotates inside the groove (201b).

6. The surgical field expander for orthopedic minimally invasive surgery according to claim 2, characterized in that: The connecting member (202) comprises a connecting block (202a), a connecting column (202b) and a rotating rod (202c); the connecting block (202a) is fixed on the outside of the second frame (101b); the connecting column (202b) rotates inside the connecting block (202a); and the rotating rod (202c) rotates on the top of the connecting column (202b).

7. The surgical field expander for minimally invasive orthopedic surgery according to claim 6, characterized in that: The connecting member (202) further comprises a cam (202d), and the cam (202d) is fixed on the outer side of the rotating rod (202c).

8. The surgical field expander for orthopedic minimally invasive surgery according to claim 2, characterized in that: The limiting member (203) comprises a spring (203a), a connecting plate (203b) and an insert rod (203c); the spring (203a) is fixed on the outside of the second frame (101b); the connecting plate (203b) is fixed on the outside of the spring (203a); and the insert rod (203c) is fixed on the outside of the connecting plate (203b).

9. The surgical field expander for minimally invasive orthopedic surgery according to claim 2, characterized in that: The fastening bolt (204) is threadedly connected to the outer side of the second frame (101b).

10. The surgical field expander for orthopedic minimally invasive surgery according to claim 2, characterized in that: The expansion frame (101) further comprises a rubber pad (101c), wherein the rubber pad (101c) is fixed on the outer side of the first frame body (101a).

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