Endoscope anastomat capable of preventing rotating head from cracking

Abstract

The utility model belongs to the technical field of endoscope anastomats, and particularly relates to an endoscope anastomat capable of preventing a rotating head from cracking, which comprises a gun barrel and a rotating head shell, the rotating head shell comprises an upper shell and a lower shell, clamping blocks are fixedly arranged on the inner sides of the upper shell and the lower shell, clamping rings are arranged on the outer sides of the clamping blocks, and the clamping rings are arranged on the outer sides of the clamping blocks. Two clamping grooves matched with the clamping blocks are formed in the outer side of the gun barrel, grooves matched with the clamping rings are formed in the inner sides of the clamping grooves, flexible pads are arranged at the top ends and the bottom ends of the inner sides of the grooves, and when the upper shell and the lower shell bear large resistance, the clamping blocks can shift towards one sides of the interiors of the clamping grooves, but the clamping blocks can move towards one sides of the interiors of the clamping grooves through connection between the clamping rings and the grooves. By means of the clamping ring, certain supporting force can be provided for the clamping block, the deviation degree of the clamping block is reduced, the stability between the upper shell and the gun barrel and between the lower shell and the gun barrel is improved, the clamping block can disperse part of stress to the contact face of the clamping ring and the groove, the situation of stress concentration between the clamping block and the clamping groove is relieved, and the risk that the rotating head cracks is reduced to a certain degree.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of endoscope anastomat, concretely is a kind of endoscope anastomat for preventing rotary head cracking. BACKGROUND

[0002] Endoscope anastomat, also known as endoscopic cutting anastomat, is a kind of medical instrument for tissue anastomosis and cutting in endoscopic surgery, according to the different power transmission ways, anastomat can be divided into two kinds of manual and electric, among them, electric endoscope anastomat cuts off tissue between two anastomotic nails while firing anastomotic nail through power sensing, with the characteristics of simple operation and rapidity, and rotary head is one of the key components of endoscope anastomat, it can adjust the swing angle of the nail cartridge assembly of endoscope anastomat, so as to adapt to the demand of different surgical sites and angles, through the adjustment of rotary head, doctor can more conveniently operate anastomat, ensure that nail cartridge assembly can accurately aim and anastomose tissue.

[0003] In addition, the existing publication number CN219397414U discloses a kind of endoscope anastomat for preventing rotary head cracking, including rotary head shell and gun barrel, the rotary head shell includes upper shell body and lower shell body, the front end inside of the upper shell body and lower shell body is extended with clamping convex, the bottom of the clamping convex is provided with circular arc surface, the rear end outer circle of the gun barrel is provided with the clamping groove matched with clamping convex, the circular arc surface and the bottom of corresponding clamping groove are pasted, the device is connected between rotary head shell and gun barrel by the cooperation between clamping convex and clamping groove, but such design can cause the clamping convex inside rotary head shell to offset to the inside of clamping groove when rotary head shell is subjected to greater resistance, cause stress to concentrate to the side where clamping convex and clamping groove are closely pasted, increase the risk of rotary head cracking, and can cause gun barrel to be skewed, affect use effect. SUMMARY

[0004] The utility model aims at providing a kind of endoscope anastomat for preventing rotary head cracking, improve the stability of gun barrel, reduce the risk of rotary head cracking.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: an endoscope anastomat for preventing rotary head cracking is provided, which includes a gun barrel and a rotary head shell. The rotary head shell includes an upper shell body and a lower shell body. Clamping blocks are fixedly arranged on the inner sides of the upper shell body and the lower shell body. Clamping rings are arranged on the outer sides of the clamping blocks. Two clamping grooves matched with the clamping blocks are arranged on the outer side of the gun barrel. Concave grooves matched with the clamping rings are arranged on the inner sides of the clamping grooves. Flexible pads are arranged on the inner side top ends and bottom ends of the concave grooves.

[0006] Optionally, the bottom of the clamping block is arc-shaped.

[0007] Optionally, the clamping blocks of the upper shell body and the lower shell body are symmetrically arranged along the center of the gun barrel.

[0008] Optionally, the upper shell, the lower shell and the gun barrel are integrally arranged.

[0009] Optionally, the inner side of the upper shell and the lower shell is further provided with a fixing ring, and the inner side of the fixing ring is attached to the outer side of the gun barrel.

[0010] Optionally, the upper shell, the lower shell and the gun barrel are connected in a splicing manner.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1. When the upper shell and the lower shell are subjected to a large resistance, the clamping block will be offset to one side of the clamping groove, but the connection between the clamping ring and the groove can provide a certain supporting force for the clamping block, reduce the offset degree of the clamping block, improve the stability between the upper shell, the lower shell and the gun barrel, and the clamping block can disperse part of the stress to the contact surface of the clamping ring and the groove, reduce the stress concentration between the clamping block and the clamping groove, and reduce the risk of cracking of the rotary head to a certain extent.

[0013] 2. The flexible pad can fill the small gap between the clamping ring and the groove, increase the actual contact area between the clamping ring and the groove, and further increase the tightness and sealing performance of the connection between the clamping ring and the groove. The increased contact area can provide a more uniform and more extensive stress distribution area, which helps to disperse the stress of the clamping block and the clamping groove, further reduces the risk of cracking, and the flexible pad can also absorb and disperse the impact and vibration of the upper shell and the lower shell, reduces the wear between the clamping block and the clamping groove, and ensures the stability of the connection between the upper shell, the lower shell and the gun barrel. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

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

[0016] Figure 2 It is a three-dimensional structure schematic diagram of the utility model upper shell dismounting state;

[0017] Figure 3 It is a three-dimensional structure schematic diagram of the utility model upper shell and lower shell split state;

[0018] Figure 4 It is a three-dimensional structure schematic diagram of the utility model lower shell;

[0019] Figure 5 It is the cross section solid structure schematic view of lower shell and gun barrel of the utility model;

[0020] Figure 6 It is Figure 5 It is the enlarged structure schematic view of A.

[0021] In the figure: 1, gun barrel; 2, upper shell; 3, lower shell; 4, clamping block; 5, clamping ring; 6, clamping groove; 7, recess; 8, flexible pad; 9, fixing ring. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and apparent, the utility model is further described in detail below by combining with the drawings and embodiments.It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0023] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element.When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0025] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.The features limited by "first", "second" can explicitly or implicitly include one or more features.In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] Embodiment one

[0027] Referring to Figure 1 , Figures 3-6The utility model discloses a prevent rotating head to crack's endoscope anastomat, including gun stem 1 and rotating head shell, rotating head shell includes upper casing 2 and lower casing 3, and the inside of upper casing 2 and lower casing 3 is fixedly provided with clamping block 4, and the outside of clamping block 4 is provided with clasp 5, and the outside of gun stem 1 is provided with two clamping grooves 6 matched with clamping block 4, and the inside of clamping groove 6 is provided with recess 7 matched with clasp 5, and the inside top end and bottom end of recess 7 are provided with flexible pad 8, and the bottom of clamping block 4 is arc-shaped setting, and the clamping block 4 of upper casing 2 and the clamping block 4 of lower casing 3 are symmetrically arranged along the center of gun stem 1, and upper casing 2, lower casing 3 and gun stem 1 are integrally arranged, and the inside of upper casing 2 and lower casing 3 is further provided with fixed ring 9, and the inside of fixed ring 9 is attached with the outside of gun stem 1, when upper casing 2 and lower casing 3 are subjected to greater resistance, clamping block 4 will be offset to the inside one side of clamping groove 6, but through the connection between clasp 5 and recess 7, can provide certain support for clamping block 4, reduce the offset degree of clamping block 4, improve the stability between upper casing 2, lower casing 3 and gun stem 1, and clamping block 4 can disperse part of stress to the contact surface of clasp 5 and recess 7, reduce the stress concentration between clamping block 4 and clamping groove 6;

[0028] Example two

[0029] As Figure 2 shown, follow the same structure as detailed in example one, and different from example one, upper casing 2, lower casing 3 and gun stem 1 are spliced connection, facilitate the replacement of rotating head.

[0030] Working principle: when upper casing 2 and lower casing 3 are subjected to greater resistance, clamping block 4 will be offset to the inside one side of clamping groove 6, but through the connection between clasp 5 and recess 7, can provide certain support for clamping block 4, reduce the offset degree of clamping block 4, improve the stability between upper casing 2, lower casing 3 and gun stem 1, and clamping block 4 can disperse part of stress to the contact surface of clasp 5 and recess 7, reduce the stress concentration between clamping block 4 and clamping groove 6;

[0031] Meanwhile the setting of flexible pad 8 can also fill the small gap between clasp 5 and recess 7, increase the actual contact area between clasp 5 and recess 7, thereby improve the tightness and sealing property of the connection between clasp 5 and recess 7, can prevent impurities from entering the connecting area, and the increased contact area can provide a more uniform, more extensive stress distribution area, which helps to disperse the stress of clamping block 4 and clamping groove 6, further reduces the risk of cracking, and flexible pad 8 can also absorb and disperse the impact and vibration received by upper casing 2 and lower casing 3, reduce the wear between clamping block 4 and clamping groove 6, ensure the stability of the connection between upper casing 2, lower casing 3 and gun stem 1;

[0032] The upper shell 2, the lower shell 3 and the gun barrel 1 are integrally arranged, without secondary installation, and convenient to use; the arc surface arranged at the bottom of the clamping block 4 can increase the contact area between the clamping block 4 and the inner side of the clamping groove 6, and improve the stability between the clamping block 4 and the clamping groove 6;

[0033] The fixing ring 9 arranged at the inner side of the upper shell 2 and the lower shell 3 can further increase the contact area between the upper shell 2, the lower shell 3 and the outer side of the gun barrel 1, thereby improving the stability of the connection.

[0034] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A laparoscopic stapler to prevent cracking of the rotary head comprising a gun barrel (1) and a rotary head housing characterized by: The rotating head shell comprises an upper shell (2) and a lower shell (3), the inner sides of the upper shell (2) and the lower shell (3) are fixedly provided with clamping blocks (4), the outer sides of the clamping blocks (4) are provided with clamping rings (5), the outer side of the gun barrel (1) is provided with two clamping grooves (6) matched with the clamping blocks (4), the inner sides of the clamping grooves (6) are provided with recesses (7) matched with the clamping rings (5), and the inner side top ends and bottom ends of the recesses (7) are provided with flexible pads (8).

2. The endoscopic stapler to prevent the rotating head from cracking according to claim 1, wherein: The bottom of the clamping block (4) is arc-shaped.

3. The rotatable head anti-split laparoscopic stapler of claim 1, wherein: The clamping blocks (4) of the upper shell (2) and the lower shell (3) are symmetrically arranged along the center of the gun barrel (1).

4. The rotatable head anti-split laparoscopic stapler of claim 3, wherein: The upper shell (2), the lower shell (3) and the gun barrel (1) are integrally arranged.

5. The rotatable head anti-split laparoscopic stapler of claim 4, wherein: The inner sides of the upper shell (2) and the lower shell (3) are further provided with fixing rings (9), and the inner sides of the fixing rings (9) are attached to the outer side of the gun barrel (1).

6. The rotatable head crack-preventing laparoscopic stapler of claim 3, wherein: The upper shell (2), the lower shell (3) and the gun barrel (1) are connected in a splicing mode.

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