Disposable anorectal anastomat with three rows of nails

Abstract

The utility model relates to the technical field of surgical instruments, in particular to a disposable three-row nail anorectal anastomat which comprises an anastomat body, anastomosis nails and nail anvils, the anastomosis nails are arranged at the end of the anastomat body, and the nail anvils move to be close to or away from the anastomosis nails in the length direction of the anastomat body through a center shaft. A smearing mechanism for storing medical lubricating oil is arranged on the periphery of the anastomat body, the smearing mechanism can slide in the length direction of the anastomat body and smear the lubricating oil on the outer surface of the anastomat body, the smearing mechanism comprises a smearing ring, and the smearing ring is arranged on the periphery of the anastomat body in a sliding mode. An annular discharging groove is further formed in the contact face of the smearing ring and the anastomat body. According to the anorectal anastomat, the smearing ring is arranged on the periphery of the anastomat body, the smearing ring can smear lubricating oil on the outer surface of the anastomat body in the moving process, convenience and rapidness are achieved, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a disposable anorectal stapler with three rows of staples. Background Art

[0002] Existing staplers usually consist of a device body, staples and anvils. The anvil is inserted into the open intestine at one end through a surgical incision, and the stapler is inserted into the closed intestine at the other end. The two ends of the intestine are connected by the traction connection between the stapler and the anvil. After the staples and the anvil sew up the intestines, they remain permanently in the patient's body.

[0003] For example, the patent with publication number CN118356222A discloses a gastrointestinal anastomosis kit and its use method. By providing a movable block, a circumcision tube and a circumcision blade, the circumcision blade can be used to circumcise the intestine, thereby increasing the circumcision function of the anastomosis device and increasing the cross-sectional area of ​​the intestinal section, which is beneficial for subsequent intestinal section docking. In order to reduce the resistance of the anastomosis device body during the entry and positioning process of the anastomosis device body, medical lubricant is usually applied to the outer surface of the anastomosis device body. However, during actual use, only a portion of the anastomosis device body will enter the patient's anus and intestine, and the medical lubricant applied to the rest of the outer surface does not come into contact with the patient, which greatly leads to a waste of lubricant. Utility Model Content

[0004] In order to solve the problem that it is troublesome to apply lubricating oil to the outer surface of the existing anastomosis device, which easily causes waste, the utility model provides a disposable three-row stapler anorectal stapler. By arranging an application ring on the periphery of the anastomosis device body, the application ring can complete the application of lubricating oil to the outer surface of the anastomosis device body during the movement, which is convenient, quick and reduces waste.

[0005] The utility model provides a disposable three-row stapler for anorectal surgery, comprising a stapler body, staples, and an anvil. The stapler body is provided with staples at the end thereof, and the anvil is movable along the length of the stapler body via a central axis to move closer to or further away from the staplers. A smearing mechanism for storing medical lubricant is disposed on the periphery of the stapler body. The smearing mechanism can slide along the length of the stapler body and apply the lubricant to the outer surface of the stapler body. The smearing mechanism, which can slide along the length of the stapler body, allows the stapler body to be smeared with medical lubricant during insertion, facilitating operation and reducing waste.

[0006] Furthermore, the smear mechanism includes a smear ring slidably disposed around the outer periphery of the stapler body, and an annular discharge groove is provided on the contact surface between the smear ring and the stapler body. During movement of the smear ring, medical lubricant flows from the annular discharge groove to smear the outer surface of the stapler body inserted into the anorectal region.

[0007] Furthermore, the invention further comprises a feeding assembly, wherein an annular cavity for storing medical lubricating oil is provided inside the smear ring, and the feeding assembly is arranged on the smear ring and communicated with the annular cavity. The feeding assembly is used to inject the stored medical lubricating oil into the annular cavity.

[0008] Furthermore, the feed assembly includes a reservoir tube, a push plate, and a pull rod. The reservoir tube is screwed onto the smear ring and communicates with the annular cavity. The push plate is disposed within the reservoir tube via the pull rod. One end of the pull rod is fixed to the push plate, while the other end extends out of the reservoir tube. A second spring is sheathed on the outside of the pull rod between the push plate and the top wall of the reservoir tube. The pull rod pushes the push plate, pushing the lubricating oil in the reservoir tube into the annular cavity.

[0009] Furthermore, an annular support is provided within the annular cavity, the annular support being disposed outside the annular discharge trough. An annular airbag is also disposed between the annular support and the annular discharge trough, and the annular airbag is connected to an air delivery assembly disposed outside the smear ring. The annular airbag is secured by the annular support, and when inflated, can block the annular discharge trough.

[0010] Furthermore, the gas delivery assembly includes an air storage box disposed on the side of the smear ring near the staples. The air storage box is connected to the annular airbag via an air guide tube. An air push plate is disposed within the air storage box. A plurality of support rods are disposed on the side of the air push plate away from the smear ring. One end of the support rod is fixed to the air push plate, and the other end extends out of the air storage box and is connected to a limit plate. A first spring is disposed between the air push plate and the smear ring. The limit plate drives the air push plate to move, allowing gas in the air storage box to be injected into the annular airbag, inflating the annular airbag and blocking the annular discharge chute.

[0011] Furthermore, the limiting piece includes a limiting ring and wing plates symmetrically arranged on both sides of the limiting ring, the limiting ring is sleeved on the periphery of the anastomosis device body, and a plurality of struts are fixedly connected to the limiting ring. The setting of the wing plates on both sides makes it easier to push the limiting piece.

[0012] Furthermore, a positioning tube is fixedly provided on the side of the smear ring away from the stapler, and the positioning tube can slide along the length of the stapler body. A locking screw is screwed on the positioning tube. The positioning tube and the locking screw can define the position of the smear ring and thus the insertion depth of the stapler body.

[0013] The beneficial effects of the present invention are:

[0014] The utility model provides a disposable three-row stapler for anorectal surgery. The application ring is driven to move outside the stapler body by the extension of the stapler body and the resistance encountered by the medical lubricating oil application mechanism. Medical lubricating oil can be automatically applied to the outer surface of the insertion part of the stapler body during the insertion of the stapler body into the anorectal region, thereby effectively completing the application of lubricating oil, improving insertion efficiency, and reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0016] Figure 1 It is a structural diagram of anorectal stapler;

[0017] Figure 2 It is a structural diagram of the smearing mechanism;

[0018] Figure 3 is the plan view of the smear circle;

[0019] Figure 4 It is a stereogram of the smeared circle;

[0020] In the figure, 1. stapler body, 2. staples, 3. anvil, 4. smear ring, 41. annular discharge trough, 42. annular cavity, 43. annular bracket, 44. annular airbag, 45. positioning tube, 46. locking screw, 5. feeding assembly, 51. storage tube, 52. push plate, 53. pull rod, 54. second spring, 6. gas delivery assembly, 61. gas storage box, 62. air guide tube, 63. support rod, 64. limiting plate, 641. limiting ring, 642. wing plate, 65. first spring, 66. push plate. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] like Figure 1 As shown, a conventional disposable three-row stapler for anorectal surgery comprises a stapler body 1, staplers 2, and anvil 3. Staplers 2 are disposed at the end of the stapler body 1. The anvil 3 moves along the length of the stapler body 1 via a central axis, moving toward or away from the staplers 2 to perform the anastomosis operation. This is mature prior art, as detailed in Patent Publication No. CN118356222A, and will not be elaborated upon here.

[0023] In order to reduce the resistance of the stapler during the entry and positioning process of the anus and rectum, so that the stapler can reach the target position more accurately, thereby ensuring the effectiveness of the three rows of nails, reducing the friction when the stapler enters the anus and rectum, and reducing the mechanical trauma and discomfort to the intestinal wall and the tissues around the anus, and reducing the occurrence of postoperative pain and complications, a coating mechanism for storing medical lubricating oil is provided on the periphery of the stapler body 1, and the coating mechanism can slide along the length direction of the stapler body 1 and apply the lubricating oil to the outer surface of the stapler body 1.

[0024] When using the stapler, the smearing mechanism is slid to the position outside the stapler body 1 near the stapler 2, and then the stapler body 1 is inserted into the patient's anus and rectum. During the insertion process, the smearing mechanism contacts the patient's body and is restricted by the patient's body and slides along the outer surface of the stapler body 1. During the sliding process, the smearing mechanism will smear medical lubricant on the outer surface of the stapler body 1 inserted into the patient's anus and rectum, thereby effectively reducing the medical lubricant smeared on the outer surface of the stapler body 1 that has not been inserted into the patient's anus and rectum, and reducing the waste of medical lubricant.

[0025] like Figure 2 As shown, the smear mechanism specifically includes a smear ring 4, which is slidably disposed on the periphery of the stapler body 1. An annular discharge groove 41 is also provided on the contact surface between the smear ring 4 and the stapler body 1. It also includes a feeding assembly 5, which has an annular cavity 42 for storing medical lubricating oil provided therein. The feeding assembly 5 is disposed on the smear ring 4 and communicates with the annular cavity 42.

[0026] The medical lubricant is input into the annular cavity 42 through the feeding assembly 5. The contact surface between the smear ring 4 and the anastomosis body 1 is the inner circular surface. The inner circular surface of the smear ring 4 is provided with an annular discharge groove 41 connected to the annular cavity 42. During the movement of the smear ring 4, the medical lubricant inside the annular cavity 42 will be output to the outer surface of the anastomosis body 1 through the annular discharge groove 41, completing the application of the medical lubricant.

[0027] Specifically, the feeding assembly 5 includes a storage tube 51, a push plate 52 and a pull rod 53. The storage tube 51 is screwed on the smear ring 4 and connected to the annular cavity 42. The push plate 52 is arranged in the storage tube 51 through the pull rod 53. The push plate 52 and the inner wall of the storage tube 51 are interference fit. One end of the pull rod 53 is fixed to the push plate 52, and the other end extends out of the storage tube 51. A second spring 54 is installed on the outside of the pull rod 53 between the push plate 52 and the top wall of the storage tube 51.

[0028] By moving the pull rod 53, the push plate 52 can be driven to move together to adjust the position of the push plate 52, and a second spring 54 is sleeved on the outer side of the pull rod 53. The lower end of the second spring 54 is against the push plate 52, and the upper end of the second spring 54 is against the inner wall of the upper side of the storage tube 51. Under the action of the push plate 52, the medical lubricant inside the storage tube 51 can be effectively pushed into the annular cavity 42, and the medical lubricant inside the annular cavity 42 can be pressurized so that it can be automatically discharged through the annular discharge groove 41.

[0029] The limiting plate 64 includes a limiting ring 641 and wings 642 symmetrically arranged on either side of the limiting ring 641. The limiting ring 641 is sleeved around the outer periphery of the stapler body 1, and a plurality of struts 63 are fixedly connected to the limiting ring 641. The provision of the wings 642 allows the limiting plate 64 to be pushed more effectively and stably when in contact with the patient's body.

[0030] A positioning tube 45 is fixedly mounted on the side of the smear ring 4 away from the staplers 2. The positioning tube 45 is slidable along the length of the stapler body 1. A locking screw 46 is screwed onto the positioning tube 45. The locking screw 46 locks the position of the smear ring 4 outside the stapler body 1, thereby limiting the insertion depth of the stapler body 1 into the patient's body via a stopper 64 in the locked position.

[0031] like Figure 3 and 4 As shown, an annular bracket 43 is provided inside the annular cavity 42, and the annular bracket 43 is arranged on the periphery of the annular discharge trough 41. An annular airbag 44 is also provided between the annular bracket 43 and the annular discharge trough 41. The material of the annular airbag 44 is preferably latex, and the annular airbag 44 is connected to the air supply component 6 arranged outside the smear ring 4.

[0032] The air delivery component 6 can deliver air to the inside of the annular airbag 44, so that the annular airbag 44 expands to the point where it is offset against the annular discharge groove 41, thereby sealing the opening of the annular discharge groove 41 and reducing the discharge of medical lubricating oil from the annular cavity 42. When the medical lubricating oil needs to be discharged, the gas inside the annular airbag 44 is discharged through the air delivery component 6, causing the annular airbag 44 to shrink and no longer blocking the annular discharge groove 41, thereby allowing the medical lubricating oil to be discharged normally.

[0033] Specifically, the gas supply assembly 6 includes an air storage box 61 arranged on the side of the smear ring 4 close to the anastomosis staple 2. The air storage box 61 is connected to the annular air bag 44 through the air guide tube 62. An air push plate 66 is provided inside the air storage box 61. The air push plate 66 and the inner wall of the air storage box 61 are interference fit. A plurality of support rods 63 are provided on the side of the air push plate 66 away from the smear ring 4. One end of the support rod 63 is fixed to the air push plate 66, and the other end extends out of the air storage box 61 and is connected to the limiting plate 64. A first spring 65 is provided between the air push plate 66 and the smear ring 4.

[0034] When the limiting plate 64 contacts the patient's body, it will push the limiting plate 64, allowing the limiting plate 64 to push the push plate 66 toward the smear circle 4 through the support rod 63, pushing the gas inside the gas storage box 61 into the interior of the annular airbag 44. A first spring 65 is installed between the push plate 66 and the inner wall of the gas storage box 61 on the side close to the smear circle 4. When the limiting plate 64 is not under force, the first spring 65 will push the push plate 66 to reset, thereby extracting the gas inside the annular airbag 44.

[0035] The above description is only illustrative and not restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A disposable three-row anorectal stapler, comprising a stapler body (1), staples (2) and an anvil (3), wherein the stapler body (1) is provided with a staple (2) at the end thereof, and the anvil (3) is movable along the length direction of the stapler body (1) via a central axis to approach or move away from the staple (2), and characterized in that: The anastomosis device body (1) is provided with a coating mechanism for storing medical lubricating oil on its periphery. The coating mechanism can slide along the length direction of the anastomosis device body (1) and coat the lubricating oil on the outer surface of the anastomosis device body (1).

2. The disposable three-row stapler anorectal stapler according to claim 1, characterized in that: The smearing mechanism comprises a smearing ring (4), which is slidably arranged on the periphery of the stapler body (1), and an annular discharge groove (41) is also provided on the contact surface between the smearing ring (4) and the stapler body (1).

3. The disposable three-row stapler anorectal stapler according to claim 2, characterized in that: It also includes a feeding assembly (5), an annular cavity (42) for storing medical lubricating oil is provided inside the smear ring (4), and the feeding assembly (5) is provided on the smear ring (4) and communicates with the annular cavity (42).

4. The disposable three-row stapler anorectal stapler according to claim 3, characterized in that: The feeding assembly (5) includes a material storage tube (51), a push plate (52) and a pull rod (53). The material storage tube (51) is screwed on the smear ring (4) and communicated with the annular cavity (42). The push plate (52) is arranged in the material storage tube (51) through the pull rod (53). One end of the pull rod (53) is fixed to the push plate (52) and the other end extends out of the material storage tube (51). A second spring (54) is sleeved on the outside of the pull rod (53) between the push plate (52) and the top wall of the material storage tube (51).

5. The disposable three-row stapler anorectal stapler according to claim 3, characterized in that: An annular support (43) is provided inside the annular cavity (42), and the annular support (43) is provided on the periphery of the annular discharge trough (41). An annular air bag (44) is also provided between the annular support (43) and the annular discharge trough (41), and the annular air bag (44) is communicated with an air delivery assembly (6) provided outside the smear ring (4).

6. The disposable three-row stapler anorectal stapler according to claim 5, characterized in that: The gas delivery assembly (6) includes an air storage box (61) arranged on the side of the smear ring (4) close to the anastomotic staple (2), the air storage box (61) is connected to the annular air bag (44) through the air guide tube (62), an air push plate (66) is provided inside the air storage box (61), and a plurality of support rods (63) are provided on the side of the air push plate (66) away from the smear ring (4), one end of the support rod (63) is fixed to the air push plate (66), and the other end extends out of the air storage box (61) and is connected to the limiting plate (64), and a first spring (65) is provided between the air push plate (66) and the smear ring (4).

7. The disposable three-row stapler anorectal stapler according to claim 6, characterized in that: The limiting plate (64) comprises a limiting ring (641) and wing plates (642) symmetrically arranged on both sides of the limiting ring (641); the limiting ring (641) is sleeved on the periphery of the anastomosis device body (1); and a plurality of support rods (63) are fixedly connected to the limiting ring (641).

8. The disposable three-row stapler anorectal stapler according to claim 2, characterized in that: A positioning tube (45) is fixedly provided on one side of the smear ring (4) away from the anastomotic staple (2). The positioning tube (45) can slide along the length direction of the anastomotic device body (1). A locking screw (46) is screwed onto the positioning tube (45).

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