Four-head distraction and exposure device for breast conserving surgery of breast cancer

Abstract

The utility model provides a four-head distraction exposure device for breast conserving surgery of breast cancer, which belongs to the technical field of medical instruments and comprises a four-head distraction mechanism, the four-head distraction mechanism comprises a central block, a distraction piece is arranged outside the central block and comprises a lantern ring, and bent distraction arms are rotatably connected in notches around the lantern ring. The lower end of each bent distraction arm is provided with an arc-shaped strip and a plurality of hooks, a positioning piece is arranged in the center block and comprises a connecting block, four connecting rods are hinged to the connecting block, and the front end of each connecting rod is matched with the corresponding bent distraction arm. According to the utility model, a wound can be expanded from four positive directions, so that the shape of the wound is approximately circular and reaches the maximum, a better visual field is provided for medical personnel, the subsequent excision work is facilitated, the operation efficiency is improved, the expanded size of the wound can be controlled more finely, the tissue cannot be injured, and a certain practical value is achieved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of medical devices, and specifically relates to a four-head spreading and exposing device for breast-conserving surgery of breast cancer. Background Technique

[0002] Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials and other similar or related items that are directly or indirectly used on the human body, including the required computer software. Their effects are mainly obtained through physical means and their purposes are the diagnosis, prevention, monitoring, treatment or alleviation of diseases, the diagnosis, monitoring, treatment, alleviation or functional compensation of injuries, the inspection, substitution, regulation or support of physiological structures or physiological processes, the support or maintenance of life, and providing information for medical or diagnostic purposes by examining samples from the human body. Among them, the mastoid retractor is a common medical device, mainly used in breast-conserving surgery for breast cancer.

[0003] Breast-conserving surgery for breast cancer belongs to the category of minimally invasive surgery. It mainly involves removing local tumors and surrounding normal breast tissues, and then retaining the remaining breast tissues. This not only achieves the purpose of treating tumors, but also retains the contour and appearance of the breast, reduces the impact of surgical trauma on patients, and improves the quality of life in the future. During the operation, a mastoid retractor is needed to separate the tissues of the wound. However, the structure of the mastoid retractor is similar to that of scissors, and it mainly separates the tissues in two directions. The shape after spreading is similar to a rectangle and cannot expand the wound to the maximum to be similar to a circular shape, resulting in a small field of vision and affecting subsequent cutting operations. Content of the Utility Model

[0004] The technical solution of the utility model provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single. Specifically, the utility model mainly provides a four-head spreading and exposing device for breast-conserving surgery of breast cancer to solve the technical problems mentioned in the above background technique, that is, the current mastoid retractor has a structure similar to that of scissors, mainly separates tissues in two directions, cannot expand the wound to the maximum, has a small field of vision, and is not convenient for subsequent resection operations.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] A four - head spreading and exposing device for breast - conserving surgery of breast cancer, comprising a four - head spreading mechanism. The four - head spreading mechanism includes a central block, and a spreading member is arranged outside the central block. The spreading member includes a collar, and the collar is installed on the central block. Bent spreading arms are rotatably connected to the notches around the collar. An arc - shaped strip is arranged at the lower end of each bent spreading arm, and a plurality of hooks are equidistantly arranged on the arc - shaped strip. A positioning member is arranged inside the central block. The positioning member includes a connecting block, and four connecting rods are hinged to the connecting block, and the front end of each connecting rod is matched with the corresponding bent spreading arm.

[0007] Further, a threaded column is arranged on the upper side of the connecting block. The threaded column penetrates through the central block, and the threaded column is threadedly connected with a threaded sleeve. The threaded sleeve is arranged at the upper - end opening position of the central block.

[0008] Further, a cover plate is arranged at the upper end of the threaded column, and the cover plate is located on the upper side of the central block. An adjusting knob is arranged on the upper side of the cover plate.

[0009] Further, a connecting member is arranged on the inner side of each bent spreading arm. Each connecting member includes two connecting pieces and a connecting shaft located between the connecting pieces. The connecting shaft is rotatably connected to the front end of the corresponding connecting rod.

[0010] Further, the front end of each hook is arc - shaped.

[0011] Further, a handle is arranged on one side of the outer wall of the central block.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By setting the central block, collar, bent spreading arms, arc - shaped strips, hooks, connecting block, connecting rods, cover plate, adjusting knob and connecting members, the present utility model realizes that in breast - conserving surgery of breast cancer, the wound can be spread from four positive directions, making the shape of the wound approximate a circle and reaching the maximum, providing a better view for medical staff and facilitating subsequent resection work, greatly improving the speed and quality of the operation. And through the mutual cooperation between the threaded column, threaded sleeve and adjusting knob, the moving amplitude of the spreading member is adjusted according to the degree of screw rotation. Thus, compared with the existing mastoid spreader, the size of the wound spread can be controlled more precisely, with stronger stability. And the front end of the hook is an arc - shaped structure, so when prying apart tissues, it will not cause tissue scratches like the hook of the mastoid spreader, having certain practical value.

[0014] The following will combine the drawings with specific embodiments to explain the present utility model in detail. Description of the Drawings

[0015] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the propping member of the utility model;

[0018] Figure 4 This is a schematic diagram of the positioning member structure of the utility model;

[0019] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure of area A.

[0020] In the figure: 1. four-head spreading mechanism; 11. center block; 12. spreading member; 121. collar; 122. bent spreading arm; 123. arc-shaped bar; 124. hook; 13. positioning member; 131. connecting block; 132. connecting rod; 133. threaded column; 134. cover plate; 135. adjusting knob; 14. threaded sleeve; 15. handle; 16. connecting member; 161. connecting piece; 162. connecting shaft. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] Please refer to the attached Figures 1 - 5, A four - head spreading and exposing device for breast - conserving surgery of breast cancer, including a four - head spreading mechanism 1. The four - head spreading mechanism 1 includes a central block 11. An expanding member 12 is arranged outside the central block 11. The expanding member 12 includes a collar 121, and the collar 121 is installed on the central block 11. Bent expanding arms 122 are rotatably connected to the notches around the collar 121. An arc - shaped strip 123 is arranged at the lower end of each bent expanding arm 122. A plurality of hooks 124 are arranged at equal intervals on the arc - shaped strip 123. A positioning member 13 is arranged inside the central block 11. The positioning member 13 includes a connecting block 131. Four connecting rods 132 are hinged to the connecting block 131, and the front end of each connecting rod 132 matches the corresponding bent expanding arm 122.

[0025] Through the four - head spreading mechanism 1, the above - mentioned structure realizes that during breast - conserving surgery of breast cancer, the wound can be spread from four positive directions, making the shape of the wound approximately circular and reaching the maximum, providing a better view for medical staff, facilitating subsequent resection work, greatly improving the speed and quality of the surgery, and being able to more precisely control the size of the wound spread without damaging tissues, having certain practical value.

[0026] The specific operation is as follows. First, place the whole device on the wound, so that the hooks 124 at the lower end of the bent expanding arms 122 are located at the lower edge of the wound. Then, hold the handle 15 with one hand and rotate the adjusting knob 135 with the thumb of this hand. Subsequently, the adjusting knob 135 drives the threaded column 133 to rotate. Since the threaded column 133 is restricted by the threaded sleeve 14, the threaded column 133 can only move up and down. Thus, through the connecting block 131, the four connecting rods 132 are driven to move synchronously, changing the angle between the connecting rod 132 and the corresponding bent expanding arm 122, so as to achieve the purpose of spreading the wound in four directions simultaneously.

[0027] Please refer to Appendix Figure 2 and Appendix Figure 4 On the upper side of the connecting block 131, there is a threaded column 133, and the connecting block 131 and the threaded column 133 are rotatably connected. The threaded column 133 penetrates through the central block 11. The threaded column 133 is threadedly connected with a threaded sleeve 14. The threaded sleeve 14 is arranged at the upper - end opening position of the central block 11. Due to the restriction of the threaded sleeve 14 on the threaded column 133, the threaded column 133 stably moves up and down inside the central block 11. A cover plate 134 is arranged at the upper end of the threaded column 133, and the cover plate 134 is located on the upper side of the central block 11. An adjusting knob 135 is arranged on the upper side of the cover plate 134. Through the adjusting knob 135, the provision of the force - application point is realized, facilitating medical staff to rotate the threaded column 133.

[0028] Please refer to Appendix Figure 2 and Appendix Figure 5A connecting piece 16 is provided on the inner side of each of the bent and spread arms 122, and each of the connecting pieces 16 includes two connecting pieces 161 and a connecting shaft 162 located between the connecting pieces 161. The connecting shaft 162 is rotatably connected to the front end of the corresponding connecting rod 132. The hinge between the bent and spread arms 122 and the corresponding connecting rod 132 is achieved through the connecting piece 16. The front end of each of the hooks 124 is arc-shaped to avoid scratching the tissue when it is pulled apart. A handle 15 is provided on one side of the outer wall of the center block 11, which is convenient for medical personnel to hold the device.

[0029] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A four-head spreading and exposing device for breast cancer conserving surgery, comprising a four-head spreading mechanism (1), wherein the four-head spreading mechanism (1) comprises a central block (11), characterized in that: An expansion member (12) is arranged outside the central block (11), the expansion member (12) comprises a collar (121), and the collar (121) is mounted on the central block (11), recesses around the collar (121) are rotatably connected to bent expansion arms (122), the lower end of each bent expansion arm (122) is provided with an arc strip (123), and a plurality of hooks (124) are arranged at equal intervals on the arc strip (123), a positioning member (13) is arranged inside the central block (11), the positioning member (13) comprises a connecting block (131), four connecting rods (132) are hinged on the connecting block (131), and the front end of each connecting rod (132) matches the corresponding bent expansion arm (122).

2. A four-head distraction exposure device for breast-conserving surgery for breast cancer according to claim 1, characterized in that: A threaded column (133) is provided on the upper side of the connection block (131), the threaded column (133) penetrates the center block (11), the threaded column (133) is threadedly connected to a threaded sleeve (14), and the threaded sleeve (14) is provided at the upper opening of the center block (11).

3. The four-head distraction exposure device for breast-conserving surgery for breast cancer according to claim 2, characterized in that: A cover plate (134) is provided at the upper end of the threaded column (133), and the cover plate (134) is located on the upper side of the central block (11). An adjustment knob (135) is provided on the upper side of the cover plate (134).

4. The four-head distraction exposure device for breast-conserving surgery for breast cancer according to claim 1, characterized in that: A connecting piece (16) is provided on the inner side of each of the bent and spread arms (122), and each of the connecting pieces (16) comprises two connecting pieces (161) and a connecting shaft (162) located between the connecting pieces (161), and the connecting shaft (162) is rotatably connected to the front end of the corresponding connecting rod (132).

5. The four-head distraction exposure device for breast-conserving surgery for breast cancer according to claim 1, characterized in that: The front end of each hook (124) is arc-shaped.

6. The four-head distraction exposure device for breast-conserving surgery for breast cancer according to claim 3, characterized in that: A handle (15) is provided on one side of the outer wall of the central block (11).

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