Electric anastomat multiplexing mechanism

Abstract

The utility model relates to the field of medical instruments, and aims to provide an electric anastomat reuse mechanism which comprises an anastomat body, an insertion groove is formed in the bottom end of a holding part of the anastomat body, a reuse handle is detachably connected in the insertion groove, a transmission shaft sleeve is arranged at the top end of the reuse handle, and the transmission shaft sleeve is connected with the transmission shaft sleeve. A driving assembly for driving the transmission shaft sleeve to rotate is arranged in the multiplex handle; a threaded transmission shaft is arranged in the anastomat body, and an inserting shaft matched with the transmission shaft sleeve in an inserting mode is arranged at the bottom of the threaded transmission shaft; a plurality of transmission teeth are arranged on the inner wall of the transmission shaft sleeve, and a transmission piece matched with the transmission teeth is arranged on the inserting shaft. The sterile reusable handle is simple in structure and quick to mount, can work in a sterile environment, does not need to be cleaned, and achieves the purpose of reusing the reusable handle.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to an electric stapler reuse mechanism. Background Technology

[0002] Minimally invasive surgery aims to achieve the same high level of effectiveness as open surgery by minimizing or eliminating trauma and disrupting the patient's internal environment, both locally and systemically. Electric staplers, as a type of minimally invasive surgical instrument, are frequently used for tissue cutting and suturing in some surgical procedures.

[0003] Existing electric staplers are divided into disposable staplers and reusable staplers, the difference being whether the electric handle is reusable. Disposable electric staplers are discarded after a single anastomosis surgery, including the stapler body, working head, and electric handle, to avoid risks such as cross-infection. However, disposable staplers contain a motor and battery pack, and discarding too many electric handles not only increases production costs for manufacturers but also increases the procurement costs for medical institutions.

[0004] Most existing reusable staplers consist of a disposable working head and a reusable electric handle. After a surgery, only the working head is discarded. Although the electric handle can be reused in the next surgery, it requires tedious cleaning and sterilization. In order to avoid cleaning and sterilization, a sterile barrier cover for the electric handle needs to be used during the operation. However, the electric handle becomes larger when covered with the sterile barrier cover, which makes it difficult for the surgeon to operate.

[0005] In summary, existing electric staplers have the following drawbacks:

[0006] 1. Current reusable electric handpieces require cleaning and sterilization after each surgery. The cleaning and sterilization process is cumbersome and time-consuming. Furthermore, during high-temperature sterilization, the circuit board, motor, and their internal components are easily affected by the high temperature, which accelerates the aging of the motor or components and shortens the service life of the device.

[0007] 2. The electric handle is difficult to assemble. During the assembly process, its output end and the input end of the working head need to be aligned before it can be inserted, which increases the preparation time for surgery. Utility Model Content

[0008] The purpose of this utility model is to provide an electric stapler reuse mechanism, which has a simple structure, is quick to install, can ensure that the reuse handle works in a sterile environment, and does not require cleaning of the reuse handle, thus achieving the purpose of reusing the reuse handle.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] An electric stapler reuse mechanism includes a stapler body, a slot is provided at the bottom end of the stapler body's grip portion, a reuse handle is detachably connected to the slot, a drive shaft sleeve is provided at the top end of the reuse handle, and a drive component for driving the drive shaft sleeve to rotate is provided inside the reuse handle.

[0011] The anastomosis device is equipped with a threaded drive shaft inside, and the bottom of the threaded drive shaft is equipped with a plug shaft that is fitted into the drive shaft sleeve.

[0012] The inner wall of the transmission shaft sleeve is provided with several transmission teeth, and the insertion shaft is provided with a transmission component that cooperates with the transmission teeth.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] 1. Through the combination of protective cap, slot and reusable handle, the reusable handle is kept in a closed space during use, avoiding contamination by blood or other biological materials. It can be reused without cleaning and sterilization, which improves the convenience of use of the device, reduces the workload of subsequent medical treatment, and lowers the cost of use.

[0015] 2. By setting transmission teeth and transmission components, the insertion shaft and transmission shaft sleeve can be inserted in any state, and the transmission components and transmission teeth can cooperate to transmit power, realizing the rapid assembly of the reusable handle and reducing surgical preparation time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a first embodiment of an electric stapler reuse mechanism of this utility model;

[0017] Figure 2 This is a simplified diagram illustrating the reusable handle in a sterile environment;

[0018] Figure 3 yes Figure 1 A simplified schematic diagram of the insertion of the plug shaft into the drive shaft sleeve;

[0019] Figure 4 This is a simplified schematic diagram of the insertion shaft into the transmission shaft sleeve of a second embodiment of an electric stapler reuse mechanism according to this utility model;

[0020] Figure 5 This is a simplified structural diagram of the reusable handle of this utility model;

[0021] Figure 6 This is an assembly diagram of the driver, rotating arm, straight push rod, and threaded drive shaft of this utility model.

[0022] Labeling Explanation: 1 Anastomosing Device Body, 2 Outer Sheath, 3 Driver, 3-1 Connecting Shaft, 4 Rotating Arm, 4-1 Long Slot, 4-2 Complementary Notch, 4-3 Fixing Pin, 5 Straight Push Rod, 5-1 Integrated Pin, 6 Threaded Drive Shaft, 200 Reusable Handle, 210 Drive Shaft Sleeve, 211 Drive Gear, 212 Internal Spline, 220 Power Plug, 400 Drive Assembly, 500 Protective Cover, 600 Insertion Shaft, 602 Limiting Flange, 610 Fixing Shaft, 620 Insertion Plate, 630 External Spline. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0024] like Figure 1-3 and Figure 5-6 The diagram shown is a schematic representation of an embodiment of an electric stapler reuse mechanism provided by this utility model:

[0025] Example 1: An electric stapler reuse mechanism includes a stapler body 1. The bottom end of the grip portion of the stapler body 1 is provided with a slot. A reuse handle 200 is detachably connected to the slot. The top end of the reuse handle 200 is provided with a transmission shaft sleeve 210. A drive assembly 400 for driving the transmission shaft sleeve 210 to rotate is provided inside the reuse handle 200.

[0026] The anastomosis device body 1 is provided with a threaded drive shaft 6, and the bottom of the threaded drive shaft 6 is provided with an insertion shaft 600 that is inserted into and cooperates with the drive shaft sleeve 210.

[0027] The inner wall of the transmission shaft sleeve 210 is provided with a plurality of transmission teeth 211, and the insertion shaft 600 is provided with a transmission component that cooperates with the transmission teeth 211.

[0028] The transmission component includes a through groove passing through the center of the plug shaft 600 and penetrating its peripheral sidewall, a fixed shaft 610 fixed on the opposite surface of the through groove, and a plug piece 620 rotatably sleeved on the fixed shaft 610.

[0029] At least one side of the plug-in piece 620 extends into a through groove and engages with the side of the transmission tooth 211 for limiting.

[0030] The transmission teeth 211 are provided with an odd number, and each transmission tooth 211 is arranged in a ring at equal intervals;

[0031] Alternatively, the transmission teeth 211 may be provided in an even number, and each transmission tooth 211 may be arranged in a staggered ring (the transmission teeth 211 are not located at the two ends of the circle diameter).

[0032] Alternatively, the transmission teeth 211 may be provided in an odd number, and each transmission tooth 211 may be arranged in a ring with unequal spacing and staggered.

[0033] Specifically, in some embodiments where the transmission teeth 211 have an odd number and are arranged in a ring at equal intervals, when the insertion shaft 600 is inserted into the transmission shaft sleeve 210, the insertion piece 620 will have two states:

[0034] In state one, when the insertion shaft 600 is inserted into the transmission shaft sleeve 210, the insertion piece 620 overlaps with the transmission tooth 211 in the axial direction of the insertion shaft 600. As the insertion shaft 600 gradually inserts into the transmission shaft sleeve 210, since the insertion piece 620 is rotatably sleeved on the fixed shaft 610, when the insertion piece 620 contacts the transmission tooth 211, the transmission tooth 211 applies a reaction force to the insertion piece 620, causing the insertion piece 620 to rotate around the fixed shaft 610 in a through-pass manner. The insert piece 620 swings to the opposite side within the slot. Since the transmission teeth 211 are arranged in a ring at equal intervals, the insert piece 620 does not interfere with the transmission teeth 211 after swinging to the opposite side. It should be noted that when there are at least three transmission teeth 211, the distance between any two adjacent transmission teeth 211 is sufficient to accommodate the insert piece 620. Subsequently, the drive assembly 400 drives the transmission shaft sleeve 210 to rotate, and the insert piece 620 is matched with the side limit of the transmission teeth 211.

[0035] In state two, when the insertion shaft 600 is inserted into the transmission shaft sleeve 210, the insertion piece 620 does not overlap with the transmission tooth 211 in the axial direction. At this time, the insertion piece 620 can be inserted into the transmission shaft sleeve 210 without obstruction, and the transmission shaft sleeve 210 is rotated by the drive assembly 400. At least one side of the insertion piece 620 is limited and engaged with the side of the transmission tooth 211.

[0036] Specifically, in some embodiments where the transmission teeth 211 are provided in an even number and each transmission tooth 211 is not arranged in opposite directions, the purpose of the transmission teeth 211 not being arranged in opposite directions is still to ensure that the insertion shaft 600 can be inserted into the transmission shaft sleeve 210 without obstruction without aligning with the transmission shaft sleeve 210, and the transmission shaft sleeve 210 is driven by the drive assembly 400 to engage with the side limit of the transmission teeth 211.

[0037] Preferably, the transmission gear 211 has three teeth.

[0038] Each transmission tooth 211 has an inner rounded corner at its top end near the central shaft of the transmission shaft sleeve 210. The purpose of this is to further guide the insert piece 620 to swing around the fixed shaft 610 in the through groove to the opposite side when the insert piece 620 contacts the transmission tooth 211.

[0039] A limiting flange 602 is also provided between the threaded drive shaft 6 and the plug shaft 600.

[0040] The grip is also hinged with a protective cover 500 that can be closed or detached from the bottom of the slot.

[0041] After the protective cover 500 is closed with the slot, a sealed space is formed inside the slot, preventing blood or other biological materials from contaminating the reusable handle 200 inside the slot during surgery. Therefore, after pushing the reusable handle 200 into the slot and fastening the protective cover 500, the gripping part of the stapler body 1 can act as a sterile barrier to protect the reusable handle 200, ensuring that the reusable handle 200 is not contaminated after surgery and can be used for the next surgery without the need for cleaning and sterilization.

[0042] The drive assembly 400 includes a motor and a power supply unit electrically connected to the motor, and the output end of the motor is connected to the bottom of the transmission shaft sleeve 210.

[0043] The reusable handle 200 is provided with a power plug 220 that is electrically connected to the power supply unit, and the anastomosis device body 1 is also provided with a display screen, a sensor and a buzzer that are electrically connected to the power plug 220.

[0044] Furthermore, the anastomosis device body 1 is also provided with an outer sheath 2, a driver 3, a rotating arm 4, and a straight push rod 5;

[0045] The outer sheath 2 is disposed on the front side of the stapler body 1, and the driver 3 is slidably connected to the inner side of the outer sheath 2. The outer sheath 2 restricts the driver 3 to move only along the first axis.

[0046] like Figure 6 As shown, the rear of the driver 3 is provided with a connecting shaft 3-1, and the middle part of the rotating arm 4 is rotatably connected to the anastomosis device body 1, so that the rotating arm 4 can rotate around the second axis, while the second axis is not parallel to the first axis;

[0047] The front part of the rotating arm 4 has a vertically extending long groove 4-1, and the connecting shaft 3-1 is slidably connected in the long groove 4-1. The rear bottom end of the rotating arm 4 has a complementary notch 4-2. The straight push rod 5 is threadedly connected to the threaded drive shaft 6. The straight push rod 5 has an integral pin 5-1 that mates with the complementary notch 4-2. The rotating arm 4 has a fixing pin 4-3, which is rotatably connected to the anastomosis device body 1.

[0048] When the threaded drive shaft 6 rotates, it drives the straight push rod 5 to move along the third axis. When the straight push rod 5 is in the traveling state, the integrated pin 5-1 on it contacts the complementary notch 4-2 on the rotating arm 4. The integrated pin 5-1 pushes the rotating arm 4 to rotate around the second axis. When the rotating arm 4 is in the rotating state, the long groove 4-1 on it contacts the connecting shaft 3-1 of the driver 3, driving the driver 3 to travel along the first axis.

[0049] Example 2:

[0050] like Figure 4 As shown, the basic structure of this embodiment 2 is generally similar to that of embodiment 1. The difference between this embodiment and embodiment 1 is that the transmission component is an external spline 630 provided on the outer peripheral wall of the insertion shaft 600, and the inner wall of the transmission shaft sleeve 210 is provided with an internal spline 212 that matches the external spline.

[0051] Furthermore, the upper end of the key teeth of the internal spline 212 is provided with a guide surface for guiding the external spline 630 to mesh with it, and the lower end of the key teeth of the external spline 630 is provided with a wedge surface that cooperates with the guide surface.

[0052] In some embodiments, the transmission element is an internal spline provided on the outer peripheral wall of the insertion shaft 600, and the inner wall of the transmission shaft sleeve 210 is provided with an external spline that matches the internal spline.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electric anastomat reuse mechanism, comprising an anastomat body (1), characterized in that: The bottom end of the holding part of the anastomat body (1) is provided with a slot, and a reusable handle (200) is detachably connected in the slot. The anastomat body (1) is provided with a threaded transmission shaft (6), and the bottom of the threaded transmission shaft (6) is provided with a plug-in shaft (600) which is in plug-in cooperation with the transmission shaft sleeve (210). The inner wall of the transmission shaft sleeve (210) is provided with a plurality of transmission teeth (211), and the plug-in shaft (600) is provided with a transmission member which is in cooperation with the transmission teeth (211).

2. The motorized anastomosis device reusing mechanism of claim 1, wherein: The transmission member comprises a through slot which passes through the center of the plug-in shaft (600) and penetrates through the peripheral wall thereof, a fixed shaft (610) which is fixed on the opposite surfaces of the through slot, and a plug-in piece (620) which is rotatably sleeved on the fixed shaft (610). At least one side of the plug-in piece (620) extends out of the through slot and is in limiting cooperation with the side edge of the transmission teeth (211).

3. The motorized anastomosis device reusing mechanism of claim 2, wherein: The transmission teeth (211) are provided in odd number, and each transmission tooth (211) is arranged in an annular equidistant manner. Alternatively, the transmission teeth (211) are provided in even number, and each transmission tooth (211) is arranged in an annular staggered manner.

4. The motorized anastomosis device reusing mechanism of claim 2, wherein: The transmission teeth (211) are provided in odd number, and each transmission tooth (211) is arranged in an annular non-equidistant staggered manner.

5. The motorized anastomosis device reusing mechanism of claim 1, wherein: The transmission member is an external spline (630) which is arranged on the peripheral wall of the plug-in shaft (600), and the inner wall of the transmission shaft sleeve (210) is provided with an internal spline (212) which is matched with the external spline.

6. The motorized anastomosis device reusing mechanism of claim 5, wherein: The key tooth upper end of the internal spline (212) is provided with a guide surface which guides the external spline (630) to engage with it, and the key tooth lower end of the external spline (630) is provided with a wedge surface which is matched with the guide surface.

7. The motorized anastomosis device reusing mechanism of claim 1, wherein: A limiting flange (602) is further arranged between the threaded transmission shaft (6) and the plug-in shaft (600).

8. The motorized anastomosis device reusing mechanism of claim 1, wherein: A protective cover (500) which can be covered with or separated from the bottom of the slot is further hinged on the holding part.

9. The motorized anastomosis device reusing mechanism of claim 1, wherein: The driving assembly (400) comprises a motor and a power supply member which is electrically connected with the motor, and the output end of the motor is connected to the bottom of the transmission shaft sleeve (210).

10. The motorized anastomosis device reuse mechanism of claim 9, wherein: The reusable handle (200) is provided with a power plug (220) which is electrically connected with the power supply member, and the anastomat body (1) is further provided with a display screen, a sensing member and a buzzer which are electrically connected with the power plug (220).

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