Laparoscopic stapler and its rotating head

Abstract

The present invention provides a laparoscopic stapler and a rotating head thereof. The rotating head of the laparoscopic stapler is used to adjust the swinging angle of the staple cartridge assembly of the laparoscopic stapler. The rotating head includes a control component, a transmission mechanism, and a locking mechanism. The control component is connected to the transmission mechanism, and the transmission mechanism is arranged to be connected to the staple cartridge assembly. The control component is arranged to be movable along a first direction and drive the staple cartridge assembly to swing through the transmission mechanism. The locking mechanism includes a locking component and a locking mating component. The locking mating component is arranged on the transmission mechanism. The control component is arranged to be movable along a second direction to drive one of the locking component and the locking mating component to move, so that the locking component and the locking mating component are locked and mated to lock the transmission mechanism, or the locking component and the locking mating component are separated to release the transmission mechanism. The rotating head of the laparoscopic stapler can adjust the swinging angle of the staple cartridge assembly and lock the staple cartridge assembly to prevent the staple cartridge assembly from accidentally swinging, improving the performance of the laparoscopic stapler in use.

Description

Technical Field

[0001] This document relates to, but is not limited to, the technical field of surgical stapling instruments, and particularly relates to, but is not limited to, a laparoscopic stapler and its rotating head. Background Art

[0002] A stapler is a device used in surgery to replace manual suturing. Its working principle is to use titanium nails or stainless steel nails to sever or anastomose tissues, similar to a stapler. Compared with traditional manual suturing, instrument suturing has the following advantages: rapid suturing, simple operation, saving surgical time; single-use, avoiding cross-infection; using titanium nails or stainless steel nails, with tight and proper suturing; fewer side effects and surgical complications, etc. It also enables the resection of tumors that could not be removed in the past, and is very popular among surgeons.

[0003] The applicable scope of staplers has covered various fields such as gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology, and obstetrics and gynecology, becoming one of the essential tools for doctors. Replacing manual suturing with instruments has various advantages for patients, such as less intraoperative bleeding, less surgical time, reduced errors caused by manual operation, avoiding infection, and rapid postoperative functional recovery.

[0004] Currently, the dedicated laparoscopic stapler is the common single-use linear cutting laparoscopic stapler. This stapler has a total of six rows of staples, and there is a brand-new blade in the staple cartridge (or staple magazine). While the staples are closed, the blade cuts the tissue from the middle, enabling the three rows of staples on each side to complete functions such as suturing and hemostasis. Laparoscopic surgery is a newly developed minimally invasive method and an inevitable trend in the future development of surgical methods. Currently, the proportion of minimally invasive surgeries in China is relatively low, and there is still a large room for development. Summary of the Invention

[0005] The following is an overview of the subject matter described in detail in this document. This overview is not intended to limit the scope of protection of the claims.

[0006] The embodiments of the present application provide a laparoscopic stapler and its rotating head. The rotating head of the laparoscopic stapler can drive the staple cartridge assembly of the laparoscopic stapler to swing to adjust the angle of the staple cartridge assembly, and can lock the staple cartridge assembly at an appropriate angle, improving the use performance of the laparoscopic stapler.

[0007] A rotating head of a laparoscopic stapler is used to adjust the swinging angle of the staple cartridge assembly of the laparoscopic stapler; the rotating head includes a control component, a transmission mechanism, and a locking mechanism. The control component is connected to the transmission mechanism, the transmission mechanism is configured to be connected to the staple cartridge assembly, and the control component is configured to be movable along a first direction and drive the staple cartridge assembly to swing through the transmission mechanism;

[0008] The locking mechanism includes a locking component and a locking mating component. The locking mating component is disposed on the transmission mechanism. The control component is configured to move along a second direction to drive the locking mating component to move, so that the locking component and the locking mating component are in locking engagement to lock the transmission mechanism, or the locking component and the locking mating component are separated to release the transmission mechanism.

[0009] The control component is a control knob that is rotatable and translatable along a rotation axis.

[0010] The transmission mechanism includes a transmission shaft, which is circumferentially fixedly connected to the control knob and slidable relative to the control knob. The control knob is configured to rotate and drive the transmission shaft to rotate so that the staple cartridge assembly swings;

[0011] The locking mating component is circumferentially fixed on the transmission shaft and slidable relative to the transmission shaft. One of the locking component and the locking mating component is provided with locking teeth, and the other is provided with a locking slot. The control knob is configured to slide relative to the transmission shaft and drive the locking mating component to slide, so that the locking teeth are inserted into the locking slot to circumferentially fix the transmission shaft, or the locking teeth are separated from the locking slot so that the transmission shaft can rotate.

[0012] A laparoscopic stapler includes a main body and a staple cartridge assembly. The main body includes the rotating head of the laparoscopic stapler described above. The transmission mechanism of the rotating head is connected to the staple cartridge assembly. The rotating head is configured to drive the staple cartridge assembly to swing.

[0013] In the rotating head of the laparoscopic stapler provided by the embodiment of the present application, the control component can move along a first direction and a second direction. When the control component moves along the first direction, it can drive the staple cartridge assembly to swing through the transmission mechanism to adjust the staple cartridge assembly to a suitable angle; when the control component moves along the second direction, it can make the locking component and the locking mating component move relative to each other, so that the locking component and the locking mating component are locked, and then the transmission mechanism is locked, so that the staple cartridge assembly is maintained in a certain angular state, or the locking component and the locking mating component are separated, and then the transmission mechanism is released to adjust the angle of the staple cartridge assembly.

[0014] The rotating head of the embodiment of the present application can not only adjust the swinging angle of the staple cartridge assembly, but also lock the adjusted staple cartridge assembly at an appropriate angle to prevent the staple cartridge assembly from accidentally swinging, improving the use performance of the laparoscopic stapler.

[0015] Other features and advantages of the embodiments of the present application will be described in the subsequent specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic diagram of the assembly structure of the rotating head and the cartridge assembly of a laparoscopic stapler according to an embodiment of the present application;

[0017] Figures 2a - 2c It is Figure 1 Schematic diagrams of the cartridge assembly of the laparoscopic stapler shown in different states;

[0018] Figure 3 It is Figure 1 Exploded schematic diagram of the rotating head and the cartridge assembly of the laparoscopic stapler shown;

[0019] Figure 4 It is Figure 1 Exploded structural schematic diagram of the rotating head of the laparoscopic stapler shown Figure 1 ;

[0020] Figure 5 It is Figure 1 Second exploded structural schematic diagram of the rotating head of the laparoscopic stapler shown;

[0021] Figure 6 It is Figure 1 Schematic diagram of the structure of the rotating head of the laparoscopic stapler shown in the locked state;

[0022] Figure 7 It is Figure 1 Cross-sectional schematic diagram of the rotating head of the laparoscopic stapler shown in the locked state;

[0023] Figure 8 It is Figure 1 Schematic diagram of the structure of the rotating head of the laparoscopic stapler shown in the released state;

[0024] Figure 9 It is Figure 1 Cross-sectional schematic diagram of the rotating head of the laparoscopic stapler shown in the released state;

[0025] Figure 10 It is Figure 1 Schematic diagram of the structure of the locking component of the rotating head of the laparoscopic stapler shown;

[0026] Figure 11 It is Figure 1 Schematic diagram of the structure of the locking mating component of the rotating head of the laparoscopic stapler shown;

[0027] Figure 12 Schematic diagram of the assembly structure of the rotating head and the cartridge assembly of a laparoscopic stapler according to another embodiment of the present application;

[0028] Figures 13a - 13c It is Figure 12 Schematic diagrams of the cartridge assembly of the laparoscopic stapler shown in different states;

[0029] Figure 14 is Figure 12 the exploded schematic view of the rotating head and the cartridge assembly of the laparoscopic stapler shown;

[0030] Figure 15 is Figure 12 the cross-sectional structural schematic view of the rotating head of the laparoscopic stapler shown;

[0031] Figure 16 is Figure 12 the partial structural schematic view of the rotating head of the laparoscopic stapler in the locked state shown;

[0032] Figure 17 is Figure 12 the partial structural schematic view of the rotating head of the laparoscopic stapler in the released state shown;

[0033] Figure 18 is the exploded schematic view of the rotating head and the cartridge assembly of the laparoscopic stapler in some cases;

[0034] Figure 19 is Figure 18 the cross-sectional structural schematic view of the rotating head of the laparoscopic stapler shown.

[0035] Reference numerals:

[0036] 100 - rotating head, 11 - control component, 111 - first control component, 112 - second control component, 1121 - first fastening part, 113 - first installation groove, 121 - transmission shaft, 1211 - sliding groove, 1212 - first retaining rib, 122 - transmission gear, 123 - transmission rack, 125 - pin, 126 - connecting rod, 131 - locking component, 1311 - locking insert tooth, 1312 - second retaining rib, 132 - locking cooperation component, 133 - elastic resetting part, 134 - connecting block, 1341 - second fastening part, 1342 - second installation groove, 135 - rotating block, 136 - ball, 14 - rotating head housing, 141 - upper shell, 1411 - groove, 142 - lower shell, 143 - cover plate, 200 - cartridge assembly. Detailed implementation manners

[0037] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined arbitrarily with each other.

[0038] In some cases, the rotating head 100 of the laparoscopic stapler is as shown in Figure 18 and Figure 19 . The rotating head 100 includes: a control component 11, a transmission mechanism, and a rotating head housing 14.

[0039] The control component 11 can be a knob.

[0040] The transmission mechanism includes a transmission shaft 121, a transmission gear 122, a transmission rack 123 and a connecting rod 126. The transmission shaft 121 and the knob (control component 11) are coaxially and fixedly connected by a pin 125, so that the knob can drive the transmission shaft 121 to rotate; the transmission gear 122 is fixedly installed on the transmission shaft 121, so that the gear can rotate with the transmission shaft 121; the transmission rack 123 meshes with the transmission gear 122 and is connected to the cartridge assembly 200 through the connecting rod 126. When the knob rotates, it can drive the transmission shaft 121 and the transmission gear 122 thereon to rotate, and then drive the transmission rack 123 to translate (such as along Figure 18 the left-right direction, that is, the up-down direction of the paper surface), and the transmission rack 123 drives the cartridge assembly 200 to swing through the connecting rod 126 to adjust the swing angle of the cartridge assembly 200.

[0041] The rotary head housing 14 includes an upper shell 141, a lower shell 142 and a cover plate 143. The upper shell 141 is provided with a mounting hole for the transmission shaft 121 to pass through, and the cover plate 143 is fixed at the mounting hole.

[0042] A rotary block 135 is fixedly installed on the transmission shaft 121, and the rotary block 135 can rotate with the transmission shaft 121. A plurality of balls 136 and a plurality of elastic reset members 133 (such as springs) are installed in the rotary block 135, so that the balls 136 can expand and contract. The rotary block 135 is arranged at the mounting hole of the upper cover, and a groove 1411 is formed on the hole wall of the mounting hole. The balls 136 on the rotary block 135 can partially extend into the groove 1411 of the upper shell 141 under the action of the spring (elastic reset member 133) to cooperate with the groove 1411 of the upper shell 141 to form a self-locking mechanism.

[0043] When the knob is manually rotated clockwise, since the knob is fixedly connected to the transmission shaft 121, the transmission shaft 121 also rotates clockwise. The transmission shaft 121 is fixedly assembled and connected to the rotating block 135, and the rotating block 135 also rotates clockwise at the same time. Since a plurality of balls 136 are installed in the rotating block 135, and the balls 136 are abutted against the spring in the rotating block 135, the spring is always in a compressed state, and a part of the balls 136 is located in the groove 1411 of the upper shell 141. When the rotating block 135 rotates clockwise, the balls 136 are radially compressed against the spring by the upper shell 141 and retract into the rotating block 135. Until the rotating block 135 rotates to a certain angle, the balls 136 are aligned with the next groove 1411, and under the action of the spring force, the balls 136 radially pop out of the rotating block 135 and extend into the next groove 1411 of the upper cover, forming a new self-locking. Since the transmission shaft 121 is fixedly connected to the transmission gear 122, when the transmission shaft 121 rotates, the transmission gear 122 also rotates at the same time. The transmission gear 122 meshes with the transmission rack 123, and the transmission gear 122 can drive the transmission rack 123 to move linearly. The transmission rack 123 is fixedly connected and assembled with the connecting rod 126, and the transmission rack 123 can drive the connecting rod 126 to move to the right (or left), so that the staple cartridge assembly 200 swings clockwise (or counterclockwise).

[0044] When the knob is manually rotated counterclockwise, the staple cartridge assembly 200 swings counterclockwise (or clockwise). The principle of the clockwise swing of the staple cartridge assembly 200 is the same as that of the counterclockwise swing of the staple cartridge assembly 200.

[0045] In this rotary head 100, self-locking is achieved by using the frictional force between the balls 136 and the grooves 1411 of the upper shell 141. When an external force is applied to the rotary head 100 or the staple cartridge assembly 200, this self-locking may fail, resulting in mis-swing of the staple cartridge assembly 200 and affecting the use performance of the endoscopic stapler.

[0046] In view of this, the embodiment of the present application provides a rotary head 100 of an endoscopic stapler, which can be used to adjust the swing angle of the staple cartridge assembly 200 of the endoscopic stapler, and can firmly lock the staple cartridge assembly 200 at an appropriate swing angle to prevent mis-swing of the staple cartridge assembly 200 and improve the use performance of the endoscopic stapler.

[0047] As Figures 1 - 3 shown, the embodiment of the present application provides a rotary head 100 of an endoscopic stapler, including a control component 11, a transmission mechanism and a locking mechanism. The control component 11 is connected to the transmission mechanism, the transmission mechanism is arranged to be connected to the staple cartridge assembly 200, and the control component 11 is arranged to be movable in a first direction and drive the staple cartridge assembly 200 to swing through the transmission mechanism to adjust the swing angle of the staple cartridge assembly 200, so that the staple cartridge assembly 200 can be in Figures 2a - 2c the different states shown, improving the applicability of the endoscopic stapler.

[0048] The locking mechanism includes a locking component 131 and a locking mating component 132. The locking mating component 132 is disposed on the transmission mechanism. The control component 11 is configured to be movable along a second direction to drive one of the locking component 131 and the locking mating component 132 to move, so that the locking component 131 and the locking mating component 132 are in locking cooperation (as shown in Figure 6 and Figure 7 ) to lock the transmission mechanism, or to separate the locking component 131 from the locking mating component 132 (as shown in Figure 8 and Figure 9 ) to release the transmission mechanism.

[0049] In the rotating head 100, on the one hand, the control component 11 controls the swinging angle of the cartridge assembly 200 by controlling the movement of the transmission mechanism. On the other hand, by controlling the movement of the locking component 131 or the locking mating component 132, the locking cooperation or separation between the locking component 131 and the locking mating component 132 is achieved. As shown in Figure 6 and Figure 7 , when the locking component 131 and the locking mating component 132 are in locking cooperation, the transmission mechanism can be locked, so that the transmission mechanism cannot transmit power and the cartridge assembly 200 cannot swing, so as to lock the cartridge assembly 200 at an appropriate swinging angle and prevent the cartridge assembly 200 from swinging erroneously; when the swinging angle of the cartridge assembly 200 needs to be adjusted, the locking component 131 can be separated from the locking mating component 132, as shown in Figure 8 and Figure 9 , to release the transmission mechanism. At this time, the transmission mechanism can transmit power, and the control component 11 can adjust the swinging angle of the cartridge assembly 200 through the transmission mechanism.

[0050] The control component 11 realizes the adjustment of the cartridge assembly 200 and the control of the locking mechanism through the movement in the first direction and the movement in the second direction respectively. Since the adjustment of the cartridge assembly 200 and the control of the locking mechanism are controlled by the different movements of the control component 11 in two directions, when adjusting the swinging angle of the cartridge assembly 200, the control component 11 needs to first perform the movement in the second direction to release the locking mechanism, and then perform the movement in the first direction to realize the change of the swinging angle of the cartridge assembly 200, making the locking of the locking mechanism reliable, effectively avoiding the erroneous swinging of the cartridge assembly 200, and improving the use performance of the endoscopic stapler.

[0051] In some exemplary embodiments, the control component 11 is a control knob that is rotatable and translatable along the rotation axis. The control knob (control component 11) is configured to perform one of the rotational and translational movements along the first direction to drive the cartridge assembly 200 to swing, and perform the other of the rotational and translational movements along the second direction to make the locking component 131 and the locking mating component 132 in locking cooperation or separation.

[0052] The control member 11 can perform both rotational motion and translational motion. Through rotational motion and translational motion, the adjustment of the staple cartridge assembly 200 and the control of the locking mechanism are respectively achieved. When adjusting the swing angle of the staple cartridge assembly 200, the control member 11 first performs one of rotational motion and translational motion to separate the locking member 131 from the locking mating member 132. At this time, the locking mechanism is in a released state, and the transmission mechanism can perform transmission operations. Then, the control member 11 performs the other of rotational motion and translational motion. The control member 11 can drive the transmission mechanism to act, and the transmission mechanism further drives the staple cartridge assembly 200 to swing, achieving the adjustment of the swing angle. When the staple cartridge assembly 200 swings to an appropriate angle, the control member 11 performs one of rotational motion and translational motion again to lock and mate the locking member 131 with the locking mating member 132. At this time, the locking mechanism is in a locked state, locking the transmission mechanism so that the transmission mechanism cannot perform transmission operations, and further locking the staple cartridge assembly 200 at this appropriate angle.

[0053] As Figures 4 - 9 shown, the transmission mechanism may include a transmission shaft 121. The transmission shaft 121 can be circumferentially fixedly connected to the control member 11 and can slide relative to the control member 11. The control member 11 is arranged to be rotatable and drive the transmission shaft 121 to rotate so that the staple cartridge assembly 200 swings.

[0054] The locking mating member 132 can be circumferentially fixed on the transmission shaft 121 and can slide relative to the transmission shaft 121. One of the locking member 131 and the locking mating member 132 may be provided with locking teeth, and the other may be provided with a locking slot. The control button is arranged to be slidable relative to the transmission shaft 121 and drive the locking mating member 132 to slide, so that the locking teeth are inserted into the locking slot to circumferentially fix the transmission shaft 121, or to separate the locking teeth from the locking slot to enable the transmission shaft 121 to rotate.

[0055] In the locking mechanism, the locking mating component 132 can slide relative to the transmission shaft 121, and the locking component 131 is fixedly arranged. When the control component 11 translates along the axial direction of the transmission shaft 121 (i.e., the second direction), it can drive the locking mating component 132 on the transmission shaft 121 to translate, so that the locking spline teeth are inserted into the locking slot, and the locking mating component 132 is locked and fixed with the locking component 131. At this time, the locking mating component 132 cannot rotate, and further the transmission shaft 121 circumferentially fixed with the locking mating component 132 cannot rotate either, and then the control component 11 circumferentially fixed with the transmission shaft 121 cannot rotate either, making the swing angle of the staple cartridge assembly 200 unable to change and being locked at this swing angle. When the control component 11 translates in the reverse direction, it can drive the locking mating component 132 on the transmission shaft 121 to translate in the reverse direction, separating the locking spline teeth from the locking slot. At this time, the locking mating component 132 and the locking component 131 are in a released state. At this time, the locking mating component 132 can rotate with the transmission shaft 121. Therefore, when the control component 11 rotates in the clockwise or counterclockwise direction (i.e., the first direction), the transmission shaft 121 and the locking mating component 132 also rotate accordingly, and the transmission shaft 121 can drive the staple cartridge assembly 200 to swing to adjust the swing angle of the staple cartridge assembly 200. After the swing angle of the staple cartridge assembly 200 is adjusted, the control component 11 can be translated to lock and mate the locking mating component 132 with the locking component 131, locking the swing angle of the staple cartridge assembly 200.

[0056] As Figures 5 - 9 shown, the transmission shaft 121 and the control component 11 can be coaxially and circumferentially fixedly connected through a pin 125. Among them, a first installation groove 113 can be provided on the control component 11. One end of the transmission shaft 121 (such as Figure 7 and Figure 9 the upper end in) can extend into the first installation groove 113. A round hole for the pin 125 to pass through can be provided on the groove wall of the first installation groove 113, and the diameter of the round hole can be adapted to the diameter of the pin 125. A sliding groove 1211 for the pin 125 to pass through can be provided on the transmission shaft 121. The sliding groove 1211 can extend along the axial direction of the pin 125, and the pin 125 can slide in the sliding groove 1211 so that the control component 11 can slide relative to the transmission shaft 121 along the axial direction of the transmission shaft 121 (such as Figure 7 and Figure 9 the up and down direction in). Of course, the sliding groove can also be provided on the control component 11, and a round hole adapted to the diameter of the pin 125 can be provided on the transmission shaft 121.

[0057] The locking and mating component 132 can be sleeved on the transmission shaft 121, and the locking and mating component 132 can be circumferentially fixed to the transmission shaft 121 and can slide along the axial direction of the transmission shaft 121. The locking and mating component 132 can be located below the control component 11, and the locking and mating component 132 can abut against the control component 11. When the control component 11 moves downward relative to the transmission shaft 121, the control component 11 can drive the locking and mating component 132 to move downward. A first retaining rib 1212 can be provided on the transmission shaft 121 to limit the distance of the downward movement of the locking and mating component 132.

[0058] The locking component 131 can be fixedly arranged and can be located above the locking and mating component 132. Locking teeth can be provided on the lower end face of the locking component 131, and a locking slot can be provided on the upper end face of the locking and mating component 132. When the control component 11 drives the locking and mating component 132 to move downward, the locking teeth and the locking slot can be separated and disengaged from the plug-in fit.

[0059] A plurality of locking teeth evenly distributed in the circumferential direction can be provided on the locking component 131, and a plurality of locking slots evenly distributed in the circumferential direction can be provided on the locking and mating component 132. As Figure 6 , Figure 8 , Figure 10 and Figure 11 shown, the locking component 131 and the locking and mating component 132 can be end face gears, the teeth of the locking component 131 can form locking teeth, and the grooves between the teeth of the locking and mating component 132 can form locking slots. Of course, the locking teeth can also be provided on the upper end face of the locking and mating component 132, and the locking slots can be provided on the lower end face of the locking component 131.

[0060] As Figure 3 , Figures 5 - 9 shown, the locking mechanism further includes an elastic reset member 133. One end of the elastic reset member 133 can be fixed, and the other end can abut against the moving locking and mating component 132. The elastic reset member 133 can be arranged to keep the locking component 131 and the locking and mating component 132 in a locked fit.

[0061] The arrangement of the elastic reset member 133 enables the locking component 131 and the locking and mating component 132 to automatically maintain a locked fit, that is, enables the locking mechanism to automatically maintain a locked state, which is beneficial to preventing the accidental swing of the staple cartridge assembly 200.

[0062] As Figure 3 , Figures 5 - 9As shown, the elastic reset member 133 can be a spring (such as a flat spring or a compression spring, etc.). The spring is sleeved on the transmission shaft 121. The lower end of the spring can be fixedly arranged, and the upper end can abut against the locking and engaging member 132. And the spring can be in a compressed state, and can apply an upward elastic force to the locking and engaging member 132. Of course, the elastic reset member 133 is not limited to a spring, and can also be other elastic components.

[0063] Along Figure 8 and Figure 9 When axially pressing the control member 11 downward along the downward arrow direction shown, the control member 11 will axially push the locking and engaging member 132 downward, causing the locking and engaging member 132 to move downward. The locking and engaging member 132 can further compress the spring. When the locking and engaging member 132 moves downward, the locking insert teeth are separated from the locking slot. At this time, the locking and engaging member 132 can rotate. While keeping pressing the control member 11, rotate the control member 11 along the Figure 8 direction shown by the curved arrow in the figure. The control member 11 can drive the transmission shaft 121 to rotate. The transmission shaft 121 can drive the locking and engaging member 132 and other components (such as the transmission gear 122 mentioned below) of the transmission mechanism installed on the transmission shaft 121 to rotate, thereby driving the cartridge assembly 200 to swing. After the cartridge assembly 200 swings to an appropriate angle, release the control member 11. Under the elastic force of the spring, the locking and engaging member 132 moves upward and automatically resets to the state of being in locking and engaging with the locking member 131 (as shown in Figure 5 and Figure 6 shown), and the control member 11 also automatically resets upward.

[0064] By respectively performing rotational and translational movements on a control member 11, the adjustment of the swing angle of the cartridge assembly 200 and the locking of the cartridge assembly 200 are realized. On the premise of ensuring the firm locking of the cartridge assembly 200, the structure of the rotating head 100 and the operations of adjusting and locking the cartridge assembly 200 are simplified.

[0065] Figures 1 - 9In the rotating head 100 shown, the pressing control member 11 is pressed to separate the locking engagement member 132 and the locking member 131, and the elastic reset member 133 is used to automatically lock the locking engagement member 132 and the locking member 131. The rotation control member 11 adjusts the swing angle of the cartridge assembly 200. Of course, it can also be set to pull out the control member 11 to separate the locking engagement member 132 and the locking member 131; or, the rotation control member 11 separates the locking engagement member 132 and the locking member 131, and the pressing and pulling out of the control member 11 adjusts the swing angle of the cartridge assembly 200. Or, the elastic reset member 133 may not be provided, but by respectively pressing and pulling out the control member 11, or by rotating the control member 11 clockwise and counterclockwise, the switching between the locked state and the released state of the locking mechanism is achieved.

[0066] As Figure 3 , Figure 5 , Figure 6 and Figure 8 shown, the transmission mechanism may further include a transmission gear 122, a transmission rack 123 and a connecting rod 126. The transmission gear 122 may be mounted on the transmission shaft 121. The transmission gear 122 may be meshed with the transmission rack 123. The transmission rack 123 may be connected to the connecting rod 126. The connecting rod 126 may be connected to the cartridge assembly 200. Among them, the transmission rack 123 may be a special-shaped rack for connecting with the connecting rod 126. Rotating the control member 11 clockwise or counterclockwise can drive the transmission shaft 121 and the transmission gear 122 to rotate clockwise or counterclockwise, and further drive the transmission rack 123 and the connecting rod 126 to reciprocate linearly, and further make the cartridge assembly 200 swing clockwise or counterclockwise.

[0067] As Figure 1 , Figure 3 and Figure 4 shown, the rotating head 100 may further include a rotating head housing 14. The rotating head housing 14 may include a first housing (such as an upper housing 141) and a second housing (such as a lower housing 142). The first housing and the second housing may be fixedly connected to form an installation cavity for the transmission mechanism. The locking member 131 may be fixedly connected to the first housing or the second housing to achieve the fixed installation of the locking member 131. One end of the elastic reset member 133 may abut against the first housing or the second housing to achieve the fixation of one end of the elastic reset member 133.

[0068] Figures 1 - 11 The adjustment process of the rotating head 100 shown is as follows.

[0069] As Figure 8 and Figure 9As shown, when manually pressing the control component 11 axially downward, since the control component 11 is connected to the locking and mating component 132, the downward movement of the control component 11 will axially push the locking and mating component 132 downward. At this time, the upper end surface of the locking and mating component 132 and the lower end surface of the locking component 131 are in a disengaged state, and the spring is in a further compressed state. When manually pressing the control component 11 axially downward and simultaneously rotating the control component 11 clockwise, the pin 125 on the control component 11 will drive the transmission shaft 121 and the locking and mating component 132 to rotate clockwise simultaneously. The transmission shaft 121 drives the transmission gear 122 to rotate clockwise, and the transmission gear 122 drives the transmission rack 123 to move rightward (or leftward). The transmission rack 123 is fixedly connected to the connecting rod 126, and the connecting rod 126 moves rightward (or leftward), causing the cartridge assembly 200 to swing clockwise (or counterclockwise), which can be from Figure 2a as shown to Figure 2b the state shown. When the cartridge assembly 200 swings to a certain angle, stop rotating the control component 11 and simultaneously stop pressing the control component 11 downward. At this time, the locking and mating component 132 moves axially upward due to the upward thrust of the spring until the upper end surface of the locking and mating component 132 meshes with the lower end surface of the locking component 131, as shown in Figure 6 and Figure 7 shown. Due to the meshing of the locking and mating component 132 and the locking component 131, the transmission shaft 121 cannot rotate, causing the transmission rack 123 and the transmission gear 122 to be in a locked state. Therefore, the cartridge assembly 200 remains at a certain angle unchanged.

[0070] When manually pressing the control component 11 axially downward and simultaneously rotating the control component 11 counterclockwise, the cartridge assembly 200 swings counterclockwise (or clockwise), which can be from Figure 2a as shown to Figure 2c the state shown. The principle of the clockwise swing of the cartridge assembly 200 is the same as that of the counterclockwise swing of the cartridge assembly 200.

[0071] In some other exemplary embodiments, as shown in Figure 12 , Figures 14 - 17 , the control component 11 includes a first control component 111 and a second control component 112. The first control component 111 is connected to the transmission mechanism and is arranged to move along a first direction to drive the cartridge assembly 200 to swing, so that the cartridge assembly 200 can be in Figures 13a - 13c the different states shown; the second control component 112 is connected to the locking component 131 and is arranged to move along a second direction and drive the locking component 131 to move, so that the locking component 131 locks and mates with the locking and mating component (as shown in Figure 16 ) or disengages (as shown in Figure 17 ).

[0072] The first control member 111 is connected to the transmission mechanism. When the first control member 111 moves in the first direction, it can drive the transmission mechanism to move, and then drive the cartridge assembly 200 to swing, so that the cartridge assembly 200 can be in the Figures 13a - 13c different states shown. The second control member 112 is connected to the locking member 131. When the second control member 112 moves in the second direction, it can drive the locking member 131 to move, so that the locking member 131 is in locking cooperation with the locking mating member (as shown in Figure 16 ), or separate the locking member 131 from the locking mating member (as shown in Figure 17 ). At this time, the swing angle of the cartridge assembly 200 can be adjusted by the first control member 111.

[0073] As shown in Figures 13a - 13c , the first control member 111 is a rotatable control knob, and the first control member 111 can perform a rotational movement in the first direction. When the first control member 111 rotates in the clockwise or counterclockwise direction (i.e., the first direction), it can drive the transmission mechanism to act, and then adjust the swing angle of the cartridge assembly 200.

[0074] As shown in Figures 13a - 13c , Figures 16 - 17 , the second control member 112 is a translatable control knob, and the second control member 112 can perform a translational movement in the second direction. Through the reciprocating translational movement of the second control member 112, it can drive the locking member 131 to move, so that the locking member 131 is in locking cooperation with the locking mating member, or separate the locking member 131 from the locking mating member. At this time, the swing angle of the cartridge assembly 200 can be adjusted by rotating the first control member 111.

[0075] Of course, the first control member 111 can also be set as a translatable control knob, and the swing angle of the cartridge assembly 200 can be adjusted through the reciprocating translational movement of the first control member 111; the second control member 112 can be set as a rotatable control knob, and the locking state and release state of the locking mechanism can be switched by rotating the second control member 112 in the clockwise or counterclockwise direction.

[0076] As shown in Figure 14 , Figure 16 and Figure 17 , the transmission mechanism may include a transmission shaft 121 fixedly connected to the first control member 111 in the circumferential direction and a transmission gear 122 mounted on the transmission shaft 121. The transmission gear 122 forms a locking mating member. The locking member 131 is provided with a locking insert tooth 1311, and the locking insert tooth 1311 is arranged to be meshed and locked or separated from the transmission gear 122.

[0077] The transmission gear 122 of the transmission mechanism can not only be used for transmitting motion, but also be used as a locking and mating component to cooperate with the locking component 131, which simplifies the structure of the rotating head 100 and is beneficial to reducing the volume and cost of the rotating head 100.

[0078] Of course, a gear-shaped locking and mating component can also be additionally provided on the transmission shaft 121, and the locking and mating component is used to engage and lock or separate from the locking spline 1311 of the locking component 131.

[0079] As Figure 16 and Figure 17 shown, the rotation axis of the first control component 111 can be perpendicular to the translation direction of the second control component 112. Among them, the rotation axis of the first control component 111 can be collinear with the central axes of the transmission shaft 121 and the transmission gear 122, and the translation direction of the second control component 112 can be along the radial direction of the transmission shaft 121 and the transmission gear 122.

[0080] As Figure 14 shown, the first control component 111 and the transmission shaft 121 can be coaxially and fixedly (at least circumferentially fixed) connected through a pin 125. The transmission gear 122 can be installed on the transmission shaft 121. The transmission mechanism can further include a transmission rack 123. The transmission gear 122 can be meshed with the transmission rack 123. The transmission rack 123 can be connected with a connecting rod 126, and the connecting rod 126 can be connected with the staple cartridge assembly 200. Among them, the transmission rack 123 can be a special-shaped rack for connecting with the connecting rod 126. Rotating the first control component 111 clockwise or counterclockwise can drive the transmission shaft 121 and the transmission gear 122 to rotate clockwise or counterclockwise, and further drive the transmission rack 123 and the connecting rod 126 to reciprocate translationally, and further make the staple cartridge assembly 200 swing clockwise or counterclockwise.

[0081] As Figures 14 - 17 shown, the second control component 112 and the locking component 131 can be connected through a connecting block 134. A first fastening portion 1121 can be provided on the second control component 112, a second fastening portion 1341 can be provided on the connecting block 134, and the first fastening portion 1121 and the second fastening portion 1341 can be fastened to drive the connecting block 134 to translate by the second control component 112. A second installation groove 1342 is provided on the connecting block 134, and one end of the locking component 131 can be installed in the second installation groove 1342 so that the connecting block 134 drives the locking component 131 to translate, and further enables the locking component 131 to translate along with the second control component 112.

[0082] As Figures 14 - 17As shown, the locking mechanism may further include an elastic reset member 133. One end of the elastic reset member 133 may be fixed, and the other end may abut against the moving locking member 131. The elastic reset member 133 may be arranged to keep the locking member 131 and the locking cooperation member in locking cooperation.

[0083] As Figures 14 - 17 shown, the elastic reset member 133 may be a spring (such as a flat spring or a compression spring, etc.). The spring is sleeved on the locking member 131. One end ( Figures 15 - 17 the right end in Figures 15 - 17 it) is fixedly arranged, and the other end ( Figures 15 - 17 the left end in it) abuts against the second rib 1312 on the locking member 131, and the spring is in a compressed state. Of course, the elastic reset member 133 is not limited to a spring and may also be other elastic components.

[0084] As Figure 14 and Figure 15 shown, the rotating head 100 may further include a rotating head housing 14. The first control member 111 may be rotatably connected to the rotating head housing 14, and the second control member 112 may be slidably connected to the rotating head housing 14. The rotating head housing 14 may include a first housing (such as an upper housing 141) and a second housing (such as a lower housing 142). The first housing and the second housing may be fixedly connected to form an installation cavity for the transmission mechanism and the locking member 131. One end of the elastic reset member 133 may abut against the first housing and / or the second housing to realize the fixation of one end of the elastic reset member 133.

[0085] Figures 12 - 17 The adjustment process of the rotating head 100 shown is as follows.

[0086] When the second control member 112 is manually pulled, the second control member 112 moves along Figure 17Slide to the right in the direction indicated by the arrow. Since the second control member 112 is connected to the connecting block 134, and the connecting block 134 is connected to the locking member 131, the locking member 131 will also slide to the right. At this time, the locking insert teeth 1311 of the locking member 131 are separated from the transmission gear 122, and the spring is in a further compressed state. When manually pulling the second control member 112 while rotating the first control member 111 clockwise, the pin 125 on the first control member 111 will drive the transmission shaft 121 to rotate clockwise as well. The transmission shaft 121 drives the transmission gear 122 to rotate clockwise, and the transmission gear 122 drives the transmission rack 123 to move left (or right). The transmission rack 123 is fixedly connected to the connecting rod 126, and the connecting rod 126 moves left (or right), causing the staple cartridge assembly 200 to swing clockwise (or counterclockwise). When the staple cartridge assembly 200 swings to a certain angle, stop rotating the first control member 111 and release the second control member 112 at the same time. At this time, the locking member 131 slides to the left due to the thrust of the spring until the locking insert teeth 1311 of the locking member 131 engage with the transmission gear 122, as Figure 16 shown. Since the locking insert teeth 1311 of the locking member 131 engage with the transmission gear 122, the transmission gear 122 cannot rotate, locking the transmission shaft 121 and the transmission rack 123. Therefore, the staple cartridge assembly 200 remains at a certain angle and does not change.

[0087] When manually pulling the second control member 112 while rotating the control member 11 counterclockwise, the staple cartridge assembly 200 swings counterclockwise (or clockwise). The principle of the clockwise swing of the staple cartridge assembly 200 is the same as that of the counterclockwise swing of the staple cartridge assembly 200.

[0088] In Figures 1 - 11 and Figures 12 - 17 the rotating head 100 shown, the locking insert teeth 1311 can be integrally formed on the locking member 131, or the locking insert teeth 1311 can be fixedly connected to the locking member 131.

[0089] The locking insert teeth 1311 are integrally formed on the locking member 131, or the locking insert teeth 1311 are fixedly connected to the locking member 131, making the locking insert teeth 1311 rigidly connected to the locking member 131. Compared with the elastic telescoping of the ball 136 shown in Figure 18 and Figure 19 the locking fit between the locking insert teeth 1311 and the locking slot of the present application is stable, the locking insert teeth 1311 and the locking slot are not easily separated, and the locking effect is good.

[0090] Of course, the locking insert teeth 1311 can also be integrally formed on the locking fit member 132, or the locking insert teeth 1311 can be fixedly connected to the locking fit member 132.

[0091] The embodiment of the present application further provides a laparoscopic stapler, which includes a main body and a cartridge assembly 200. The main body includes the rotating head 100 of the laparoscopic stapler described above. The transmission mechanism of the rotating head 100 is connected to the cartridge assembly 200, and the rotating head 100 is configured to drive the cartridge assembly 200 to swing.

[0092] The laparoscopic stapler is a complete surgical instrument composed of a cartridge assembly 200 and a main body. The rotating head 100 in the main body can control the swinging of the cartridge assembly 200 and lock the cartridge assembly 200. The doctor can control the swinging of the cartridge assembly 200 in the body by manually operating the control member 11 outside the body. Since the position of the tissue to be cut and anastomosed is uncertain, it is necessary for the doctor to adjust the relative position of the cartridge assembly 200 every time the laparoscopic stapler is used. For the laparoscopic stapler of the present application, the control member 11 (the first control member 111) can be rotated clockwise or counterclockwise outside the body to make the cartridge assembly 200 swing, which is convenient for the doctor to flexibly control the cartridge assembly 200 outside the body. And after each swing to adjust the cartridge assembly 200, the rotating head 100 can be self-locked to keep the position of the cartridge assembly 200 stable and keep the adjusted position of the cartridge assembly 200 relatively unchanged.

[0093] Although the disclosed embodiments of the present application are as above, the described content is only an embodiment adopted for the convenience of understanding the present application and is not intended to limit the present application. Any person skilled in the art within the scope of the present application can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present application. However, the scope of patent protection of the present application shall still be subject to the scope defined by the appended claims.

Claims

1. A rotating head of a laparoscopic stapler, which is used to adjust the swing angle of the staple cartridge assembly of the laparoscopic stapler; characterized in that, The rotary head includes a control component, a transmission mechanism, and a locking mechanism. The control component is connected to the transmission mechanism. The transmission mechanism is arranged to be connected to the staple cartridge assembly. The control component is arranged to be movable in a first direction and drive the staple cartridge assembly to swing through the transmission mechanism. The locking mechanism includes a locking component and a locking mating component. The locking mating component is arranged on the transmission mechanism. The control component is arranged to be movable in a second direction to drive the locking mating component to move, so that the locking component and the locking mating component are locked together to lock the transmission mechanism, or the locking component and the locking mating component are separated to release the transmission mechanism. The control component is a control knob that is rotatable and translatable along the rotation axis. The transmission mechanism includes a transmission shaft, a transmission gear, a transmission rack, and a connecting rod. The transmission shaft is circumferentially fixedly connected to the control knob and slidable relative to the control knob. The control knob is arranged to be rotatable and drive the transmission shaft to rotate to swing the staple cartridge assembly. The locking mating component is circumferentially fixed on the transmission shaft and slidable relative to the transmission shaft. One of the locking component and the locking mating component is provided with locking teeth, and the other is provided with a locking slot. The control knob is arranged to be slidable relative to the transmission shaft and drive the locking mating component to slide, so that the locking teeth are inserted into the locking slot to circumferentially fix the transmission shaft, or the locking teeth are separated from the locking slot to enable the transmission shaft to rotate.

2. The rotating head of the laparoscopic stapler according to claim 1, characterized in that, The locking teeth are integrally formed on the locking component, or the locking teeth are fixedly connected to the locking component.

3. A laparoscopic stapler, comprising a main body and a cartridge assembly, characterized in that, The main body includes the rotary head of the endoscopic stapler according to any one of claims 1 to 2. The transmission mechanism of the rotary head is connected to the staple cartridge assembly. The rotary head is arranged to drive the staple cartridge assembly to swing.

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