Operating forceps with split forceps heads

Abstract

The utility model discloses a pair of operating forceps with split forceps heads, which relates to the field of operating instruments and comprises a forceps body, forceps handles rotationally connected to the forceps body, a fixed forceps rod fixedly connected to the lower end of the forceps body and a movable forceps rod movably connected to the forceps body. According to the operating forceps, the fixed forceps head is detachably connected to the bottom of the fixed forceps rod, the movable forceps head is detachably connected to the bottom of the movable forceps rod, the fixed forceps head and the movable forceps head at main stress parts only occupy a very small part of the operating forceps, and few structures are attached to the fixed forceps head and the movable forceps head, so that waste caused by replacement is very small. The fixed clamp seat is arranged to limit downward movement of the fixed clamp head, the fixed clamp head is fixed through the fastening screw to avoid left-right shaking of the fixed clamp head, the movable clamp rod can automatically limit upward movement of the movable clamp head, and the movable clamp head is fixed through the fixed clamp plate and the fixed plug pin to avoid movement.

Description

Technical Field

[0001] The utility model relates to the field of surgical instruments, in particular to a pair of surgical forceps with split forceps heads. Background Art

[0002] Surgical forceps can wear out and even deform over time, especially the tips, which are the primary forceps bearing the most stress. This can significantly reduce their precision and make them difficult to meet the requirements for surgical instrument qualification, necessitating replacement. At the time, replacing the entire forceps was often expensive, and discarding the normal forceps was wasteful, leading to the development of forceps that only allowed the tips to be replaced.

[0003] However, current replaceable-head surgical forceps often use a threaded fastening system for removable head attachment. Excessive force during use can cause the head and body to twist. Others use more complex fastening systems, and when replacing these heads, a portion of the body or additional attachments are often discarded, resulting in waste.

[0004] In the patent application number 201720886434.5, entitled "A Minimally Invasive Surgical Forceps," a forceps head, a forceps head seat, a pull rod, and a forceps tube are disclosed. The pull rod includes a first section and a second section. The tail end of the first section is detachably connected to the head end of the second section. The first section is disposed in the forceps head seat, and the head end of the first section is connected to the forceps head via a connecting rod mechanism. The second section is disposed in the forceps tube, and the tail end of the second section is connected to the forceps handle. The forceps head seat and the forceps tube are detachably connected. This device adds a split function and a stroke limiting function. The split function allows only the forceps head to be removed for replacement after the surgical forceps fail during use. The limiting function makes it easier to control during use, and the use of scissor-shaped forceps will not cause damage due to excessive opening angles. The forceps head in this patent is fixed by a threaded connection. Therefore, it is easy to cause rotation during use. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a surgical forceps with a split head to solve the technical problems in the prior art such as the complicated disassembly method and unstable connection of the forceps head and the multiple accompanying structures of the forceps head.

[0006] Based on the above purpose, the utility model provides a surgical forceps with a split head, comprising a forceps body and a forceps handle rotatably connected to the forceps body, and further comprising:

[0007] a fixed clamp rod fixedly connected to the lower end of the clamp body;

[0008] A movable clamp rod movably connected to the clamp body, wherein the upper end of the movable clamp rod is located inside the clamp body and movably connected to the clamp handle;

[0009] The fixed clamp head is detachably connected to the bottom of the fixed clamp rod and the movable clamp head is detachably connected to the bottom of the movable clamp rod. The upper end of the fixed clamp head is also fixedly connected to a fixed clamp seat. The fixed clamp head is clamped with the fixed clamp rod through the fixed clamp seat and then fixed by a fastening screw.

[0010] Furthermore, a movable cavity is provided in the pliers body, and the pliers handle is divided into inner and outer parts by a rotating shaft connected to the pliers body. The outer part is located outside the pliers body, and the inner part is located in the movable cavity, and the lower end surface of the inner part is slidably connected to the top end of the movable pliers rod.

[0011] Furthermore, the upper half of the movable clamp rod is located inside the clamp body, and the lower half is located outside the clamp body. The fixed clamp rod and the movable clamp rod are both semicircular, and the vertical plane of the movable clamp rod is slidably connected to the vertical plane of the fixed clamp rod.

[0012] Furthermore, a fixed clamping plate is fixedly connected to the upper end of the movable clamp head. The fixed clamping plate is slidably connected to the movable clamp rod and is fixed to the movable clamp rod through a fixed pin.

[0013] Furthermore, the fastening screw is vertically connected to the fixed clamp rod, the fixed clamp head and the fixed clamp seat and is threadedly connected thereto, and the fixing pin is horizontally inserted into the movable clamp rod and the fixed clamp plate.

[0014] Furthermore, the fixed clamp rod is fixedly connected to a plurality of limiting clamps, and the movable clamp rod is slidably connected to the inner side of the limiting clamp.

[0015] The advantages of the present invention are: 1. The pliers body, fixed pliers rod, movable pliers rod and pliers handle that do not need to be replaced account for the main body, and the fixed pliers head and movable pliers head that are the main force-bearing parts only account for a very small part of the surgical pliers, and there are few incidental structures on the fixed pliers head and the movable pliers head, so the waste caused by replacement is very small.

[0016] 2. The fixed clamp is primarily subjected to downward force, so a fixed bracket is provided to limit its downward movement, and a set screw is used to secure it against side-to-side movement. The movable clamp is primarily subjected to upward force, and the movable clamp rod automatically limits its upward movement. A fixed bracket and fixed pins are used to secure it against side-to-side movement. The connection between the two clamps is very stable and will not wobble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the appearance of the utility model.

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the fixed clamp head in the utility model.

[0022] The markings in the figure are: 101, clamp body, 102, fixed clamp rod, 103, movable clamp rod, 104, clamp handle, 105, limit clamp, 106, fixed clamp head, 107, movable clamp head, 108, movable cavity, 109, fixed clamp seat, 110, fastening screw, 111, fixed clamp plate, 112, fixed pin.

[0023] Specific implementation and principle

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0026] The first aspect of the present invention is as follows Figure 1 and Figure 2As shown, the surgical forceps include a forceps body 101 and a forceps handle 104 rotatably connected to the forceps body 101, wherein a movable cavity 108 is provided in the forceps body 101, and the forceps handle 104 is divided into an inner and outer part by a rotating shaft connected to the forceps body 101, the outer part is located outside the forceps body 101, and the inner part is located in the movable cavity 108, the fixed connection at the lower end of the forceps body 101 is also a fixed forceps rod 102, and the forceps body 101 is also movably connected to a movable forceps rod 103, the upper half of the movable forceps rod 103 is located in the forceps body 101, and the lower half is located outside the forceps body 101, and the lower end surface of the part of the forceps handle 104 located in the movable cavity 108 is slidably connected to the top of the movable forceps rod 103.

[0027] Therefore, when the pliers handle 104 is gripped, the pliers handle 104 is rotated by the rotating shaft, and the portion of the pliers handle 104 located in the movable cavity 108 moves downward, forcing the movable pliers rod 103 to slide downward as well.

[0028] The key point is that the fixed clamp head 106 is detachably connected to the bottom of the fixed clamp rod 102, and the movable clamp head 107 is detachably connected to the bottom of the movable clamp rod 103. Since the fixed clamp rod 102 is fixed, the installed fixed clamp head 106 is also fixed, and the movable clamp rod 103 can slide up and down, so the installed movable clamp head 107 can also slide up and down, so the movable clamp head 107 that slides up and down and the fixed clamp head 106 that is fixed constitute a clamp head assembly that can be clamped.

[0029] Among them, Figure 3 and Figure 4 As shown, the upper end of the fixed clamp head 106 is also fixedly connected to a fixed clamp seat 109. The fixed clamp head 106 is clamped to the fixed clamp rod 102 through the fixed clamp seat 109 and then fixed by a fastening screw 110. The fastening screw 110 is vertically connected to the fixed clamp rod 102, the fixed clamp head 106 and the fixed clamp seat 109 and is threadedly connected thereto. The upper end of the movable clamp head 107 is also fixedly connected to a fixed clamp plate 111. The fixed clamp plate 111 is slidably connected to the movable clamp rod 103 and is fixed to the movable clamp rod 103 by a fixed pin 112. The fixed pin 112 is laterally inserted into the movable clamp rod 103 and the fixed clamp plate 111.

[0030] Because the movable clamp head 107, which slides up and down, and the stationary fixed clamp head 106 constitute the clamp head assembly that can be clamped, the main force applied to the fixed clamp head 106 is downward. Therefore, a fixed clamp seat 109 is provided to limit the downward movement of the fixed clamp head 106, and then a fastening screw 110 is used to fix the fixed clamp head 106 to prevent it from shaking left and right. The fixed clamp seat 109 and the fixed clamp rod 102 are provided with transverse cross plates, forming a structure similar to a mortise and tenon joint. The two transverse cross plates can effectively limit the downward movement of the fixed clamp head 106, and the mortise and tenon joint structure, combined with the fastening screw 110, prevents the fixed clamp head 106 from shaking left and right.

[0031] The main force direction of the movable clamp head 107 is upward. However, since the movable clamp head 107 is fixedly connected to the lower end of the movable clamp rod 103, the movable clamp rod 103 can automatically limit the upward movement of the movable clamp head 107. The movable clamp head 107 is then fixed by the fixed clamp plate 111 and the fixed pin 112 to prevent the movable clamp head 107 from shaking left and right (the fixed clamp plate 11 is rectangular, and the corresponding groove inside the movable clamp rod 103 is also a rectangular groove).

[0032] Preferably, the upper half of the movable clamp rod 103 is located inside the clamp body 101, and the lower half is located outside the clamp body 101. The fixed clamp rod 102 and the movable clamp rod 103 are both semicircular, and the vertical plane of the movable clamp rod 103 is slidably connected to the vertical plane of the fixed clamp rod 102. The fixed clamp rod 102 is also fixedly connected to a plurality of limiting clamps 105, and the movable clamp rod 103 is slidably connected to the inner side of the limiting clamp 105.

[0033] The limiting clamp 105 ensures that the movable clamp rod 103 and the fixed clamp rod 102 are always in close contact, preventing the movable clamp rod 103 and the fixed clamp rod 102 from bending and deforming after a long period of use, resulting in a gap between the movable clamp rod 103 and the fixed clamp rod 102, which affects the precision of the surgical forceps. DETAILED DESCRIPTION

[0034] When in use, the handle 104 is gripped tightly and rotated by the shaft. The portion of the handle 104 located in the movable cavity 108 moves downward, forcing the movable rod 103 to slide downward as well. This causes the movable jaw 107 mounted at the bottom of the movable rod 103 to also slide downward, and cooperate with the fixed jaw 106 to clamp the desired object. The fixed rod 102 and the movable rod 103 can be set to different lengths and thicknesses as needed.

[0035] After long-term use, the fixed jaws 106 and movable jaws 107 may become worn or even deformed and require replacement. Simply loosen the fastening screws 110 and remove the fixed jaws 106. The fixed base 109 on the fixed jaws 106 and the fixed jaw rod 102 are provided with a transverse crossbar, forming a mortise-and-tenon joint structure, making both installation and removal very convenient. Furthermore, the fixed base 109 effectively limits the downward movement of the fixed jaws 106 and, in conjunction with the fastening screws 110, prevents the fixed jaws 106 from shaking left or right.

[0036] It is also very simple to disassemble the movable clamp head 107. After pulling out the fixing pin 112, the movable clamp head 107 can be easily removed because the main force direction of the movable clamp head 107 is upward. However, since the movable clamp head 107 is fixedly connected to the lower end of the movable clamp rod 103, the movable clamp rod 103 can automatically limit the upward movement of the movable clamp head 107. Therefore, there is no need to set up a complex structure for connection. The movable clamp head 107 only needs to be fixed by the fixing clamp plate 111 and the fixing pin 112 to prevent the movable clamp head 107 from shaking left and right.

[0037] Based on the above, the present invention does not require replacement of the pliers body 101, the fixed pliers rod 102, the movable pliers rod 103 and the pliers handle 104, which are the main components. The fixed pliers head 106 and the movable pliers head 107, which are the main stress-bearing parts, only account for a very small part of the surgical pliers. There are few additional structures on the fixed pliers head 106 and the movable pliers head 107, so the waste caused by replacement is very small. Since the main stress direction of the fixed pliers head 106 is downward, a fixed clamping seat 109 is provided to limit the downward movement of the fixed pliers head 106, and then the fixed pliers head 106 is fixed by a fastening screw 110 to prevent the fixed pliers head 106 from shaking left and right. The main stress direction of the movable pliers head 107 is upward, and the movable pliers rod 103 can automatically limit the upward movement of the movable pliers head 107, and then the movable pliers head 107 is fixed by a fixed clamping plate 111 and a fixed pin 112 to prevent the movable pliers head 107 from shaking left and right. Therefore, the connection between the two pliers heads is very stable and will not shake during use.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0039] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A surgical forceps with a split head, comprising a forceps body (101) and a forceps handle (104) rotatably connected to the forceps body (101), characterized in that: Also includes: A fixed clamp rod (102) fixedly connected to the lower end of the clamp body (101); A movable clamp rod (103) movably connected to the clamp body (101), wherein the upper end of the movable clamp rod (103) is located inside the clamp body (101) and movably connected to the clamp handle (104); A fixed clamp head (106) is detachably connected to the bottom of the fixed clamp rod (102) and a movable clamp head (107) is detachably connected to the bottom of the movable clamp rod (103). The upper end of the fixed clamp head (106) is also fixedly connected to a fixed clamp seat (109). The fixed clamp head (106) is clamped to the fixed clamp rod (102) through the fixed clamp seat (109) and then fixed by a fastening screw (110).

2. The surgical forceps with split heads according to claim 1, characterized in that: A movable cavity (108) is provided in the pliers body (101), and the pliers handle (104) is divided into an inner and an outer part by a rotating shaft connected to the pliers body (101), the outer part being located outside the pliers body (101), and the inner part being located in the movable cavity (108), and the lower end surface of the inner part being slidably connected to the top end of the movable pliers rod (103).

3. The surgical forceps with split heads according to claim 1 or 2, characterized in that: The upper half of the movable clamp rod (103) is located inside the clamp body (101), and the lower half is located outside the clamp body (101). The fixed clamp rod (102) and the movable clamp rod (103) are both semicircular, and the vertical plane of the movable clamp rod (103) is slidably connected to the vertical plane of the fixed clamp rod (102).

4. The surgical forceps with split heads according to claim 1, characterized in that: The upper end of the movable clamp head (107) is also fixedly connected to a fixed clamp plate (111), and the fixed clamp plate (111) is slidably connected in the movable clamp rod (103) and fixed to the movable clamp rod (103) through a fixed pin (112).

5. The surgical forceps with split heads according to claim 4, characterized in that: The fastening screw (110) is vertically connected to the fixed clamp rod (102), the fixed clamp head (106) and the fixed clamp seat (109) and is threadedly connected thereto, and the fixing pin (112) is laterally inserted into the movable clamp rod (103) and the fixed clamp plate (111).

6. The surgical forceps with split heads according to claim 3, characterized in that: The fixed clamp rod (102) is also fixedly connected to a plurality of position-limiting clamps (105), and the movable clamp rod (103) is slidably connected to the inner side of the position-limiting clamp (105).

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