Handle assembly of surgical operating instrument and surgical operating instrument

Abstract

The utility model provides a handle component of a surgical operating instrument and the surgical operating instrument. The handle assembly comprises a shell with a containing cavity; the spiral transmission mechanism is located in the containing cavity and is constructed to convert rotary motion into linear motion, and the spiral transmission mechanism comprises a screw capable of moving linearly; the main driving mechanism is positioned in the accommodating cavity and is configured to apply main driving energy to the screw transmission mechanism so as to enable the screw rod to do linear motion along the axis direction of the screw rod; and the auxiliary driving mechanism is located in the containing cavity and is configured to apply auxiliary driving energy to the screw transmission mechanism when the main driving mechanism stops providing the main driving energy, so that the screw rod does linear motion in the axis direction. According to the handle assembly and the surgical operating instrument, when the main driving mechanism breaks down, the screw can be driven by means of the auxiliary driving mechanism, and the working reliability of the handle assembly and the surgical operating instrument is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a handle component and a surgical instrument. Background Art

[0002] With the advancement of science and technology, surgical instruments are constantly updated and developed. Take the stapler as an example. Its working principle is similar to that of a stapler, which can separate or staple tissues. The stapler can replace manual suturing during surgery, making surgery safer and more convenient, and improving the quality of life of patients. However, the working reliability of the stapler needs to be improved. Utility Model Content

[0003] At least one embodiment of the utility model provides a handle assembly of a surgical instrument and a surgical instrument to solve the problem that when a surgical instrument fails during an operation, it cannot continue to work, making the operation difficult to complete.

[0004] At least one embodiment of the utility model provides a handle assembly of a surgical instrument, comprising: a shell having a accommodating cavity; a spiral transmission mechanism, located in the accommodating cavity and configured to convert rotational motion into linear motion, the spiral transmission mechanism including a screw that can move linearly; a main drive mechanism, located in the accommodating cavity and configured to apply main drive energy to the spiral transmission mechanism to enable the screw to move linearly along its axial direction; an auxiliary drive mechanism, located in the accommodating cavity and configured to apply auxiliary drive energy to the spiral transmission mechanism to enable the screw to move linearly along the axial direction when the main drive mechanism stops providing the main drive energy.

[0005] For example, according to the handle assembly described in an embodiment of the utility model, the spiral transmission mechanism also includes a gear assembly meshing with the screw, and the gear assembly is constructed to rotate around a rotation axis parallel to the axial direction to make the screw move linearly along the axial direction; the main drive mechanism includes a main drive gear assembly arranged along a first radial direction of the screw, and the main drive gear assembly is meshed with the gear assembly to transfer the main drive energy to the gear assembly; the auxiliary drive mechanism includes an auxiliary drive gear assembly arranged along a second radial direction of the screw, and the auxiliary drive gear assembly is meshed with the gear assembly to transfer the auxiliary drive energy to the gear assembly; wherein the second radial direction is different from the first radial direction.

[0006] For example, according to the handle assembly described in an embodiment of the utility model, the gear assembly includes a driven gear; the main drive gear assembly includes a main drive gear meshing with the driven gear; the auxiliary drive gear assembly includes an auxiliary drive gear meshing with the driven gear; the main drive gear is constructed to rotate around a rotation axis parallel to the first radial direction to drive the driven gear to rotate around the axial direction; wherein the auxiliary drive gear is constructed as follows: when the main drive gear stops driving the driven gear to rotate, the auxiliary drive gear rotates around a rotation axis parallel to the second radial direction to drive the driven gear to rotate around the axial direction.

[0007] For example, according to the handle assembly described in the embodiment of the present invention, the second radial direction is opposite to the first radial direction, and the main drive gear assembly and the auxiliary drive gear assembly are both arranged in a mirror-symmetrical manner relative to the axial direction.

[0008] For example, according to the handle assembly described in an embodiment of the utility model, the gear assembly also includes a nut; wherein: the driven gear is sleeved outside the nut and is constructed to be fixedly connected to the nut to rotate around a rotation axis parallel to the axial direction; the screw is inserted into the nut and meshes with the nut thread.

[0009] For example, according to the handle assembly described in an embodiment of the utility model, the handle assembly also includes a support member located in the accommodating cavity; the support member includes a main body, a first support portion and a second support portion, and the main body is configured to support the spiral transmission mechanism; the first support portion is configured to support the main drive mechanism, and the second support portion is configured to support the auxiliary drive mechanism; wherein the main body includes a first end and a second end opposite to each other in its extension direction, the first support portion is connected to the first end, and the second support portion is connected to the second end.

[0010] For example, according to the handle assembly described in the embodiment of the present utility model, the first support portion and the second support portion are arranged in positions to be mirror-symmetrical with respect to the axis direction.

[0011] For example, according to the handle assembly described in an embodiment of the utility model, at least part of the spiral transmission mechanism passes through the main body along the axial direction, at least part of the main drive mechanism passes through the first support part along the first radial direction; at least part of the auxiliary drive mechanism passes through the second support part along the second radial direction.

[0012] For example, according to the handle assembly described in an embodiment of the utility model, the surgical instrument includes an axis assembly; the shell is constructed to have a gripping portion suitable for gripping and a connecting portion connected to the gripping portion, at least a portion of the connecting portion extends along the axial direction and is constructed to be detachably connected to the axis assembly; wherein the connecting portion is provided with a first opening connected to the accommodating cavity, and at least a portion of the auxiliary drive mechanism is located in the first opening.

[0013] For example, according to the handle assembly described in the embodiment of the present invention, the surgical instrument includes an auxiliary drive source, which is configured to be detachably connected to the auxiliary drive mechanism through the first opening and to apply an auxiliary drive force to the auxiliary drive mechanism.

[0014] For example, according to the handle assembly described in an embodiment of the utility model, a second opening is provided at one end of the holding portion away from the connecting portion; wherein the minimum distance between the first opening and the spiral transmission mechanism is a first distance, and the minimum distance between the second opening and the spiral transmission mechanism is a second distance; the first distance is smaller than the second distance.

[0015] For example, according to the handle assembly described in an embodiment of the utility model, the auxiliary drive source includes a manual member; the auxiliary drive mechanism includes an auxiliary drive gear, and the auxiliary drive gear includes a gear portion and a coupling portion connected to the gear portion; the manual member is constructed to be operably connected to the coupling portion so that the auxiliary drive gear rotates under the action of the manual member.

[0016] For example, according to the handle assembly described in an embodiment of the utility model, the manual part includes a rod body, and a first guide structure is provided at the end of the rod body; the joint part includes an axial cavity, and a second guide structure is provided on the wall of the axial cavity; wherein the first guide structure and the second guide structure cooperate with each other in shape to guide part of the rod body to extend into the axial cavity and maintain the circumferential positioning of the rod body and the axial cavity.

[0017] For example, according to the handle assembly described in the embodiment of the present invention, the surgical instrument further includes a seal, which is detachably disposed at the first opening and is configured to seal the first opening.

[0018] At least one embodiment of the present utility model provides a surgical instrument, comprising the handle assembly described in any one of the above embodiments.

[0019] The handle assembly and surgical instrument provided by the utility model are provided with a main drive mechanism and an auxiliary drive mechanism. When the main drive mechanism cannot apply the main drive energy to the spiral transmission mechanism, the auxiliary drive mechanism can apply the auxiliary drive energy to the spiral transmission mechanism, thereby realizing the linear motion of the screw. In this way, even if the main drive mechanism fails during the operation, the spiral transmission mechanism can still be driven to continue working with the help of the auxiliary drive mechanism, thereby ensuring the smooth completion of the operation and improving the safety and stability of the stapler when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0021] Figure 1 A schematic structural diagram of a handle assembly of a surgical instrument provided by at least one embodiment of the utility model.

[0022] Figure 2 A cross-sectional view of a handle assembly of a surgical instrument provided by at least one embodiment of the present invention.

[0023] Figure 3 for Figure 2 A local enlarged schematic diagram is shown.

[0024] Figure 4 A schematic diagram of the partial structure of a surgical instrument provided by at least one embodiment of the utility model.

[0025] Figure 5 It is a schematic diagram of the first radial direction and the second radial direction in at least one embodiment of the utility model.

[0026] Figure 6 A partial structural cross-sectional view of a handle assembly of a surgical instrument provided by at least one embodiment of the present utility model.

[0027] Figure 7 A schematic diagram of the use process of a handle assembly of a surgical instrument provided by at least one embodiment of the utility model.

[0028] Figure 8 for Figure 7 A local enlarged schematic diagram of point B is shown. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The words "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0031] The features such as "vertical" and "parallel" used in the embodiments of the present invention include both "vertical" and "parallel" in a strict sense, and "approximately vertical" or "approximately parallel" within an acceptable deviation range. Similarly, the "center" used in the embodiments of the present invention may include a position strictly located at the geometric center and a position approximately located at the center of a small area around the geometric center. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the value.

[0032] With the development of modern science and technology and the improvement of manufacturing technology, surgical instruments are also constantly innovating. Taking the stapler as an example, the stapler is often used to sew and cut the target tissue. It has the advantages of fast and accurate suturing, simple operation, less bleeding, and few side effects and surgical complications. Driven by the driving mechanism in the stapler, the stapler closes the anvil and the staple magazine assembly in the closing stage, fires the suture staples to achieve tissue suturing in the firing stage, and then separates the anvil and the staple magazine assembly.

[0033] During the research, the inventor of the utility model found that some staplers supply power to the control circuit of the stapler through a power supply, and the control circuit provides a control signal to the motor (for example, driving the output shaft of the motor to rotate), so that the output shaft of the motor drives the transmission mechanism in the stapler to move, thereby realizing the stapler's stapling function. However, when the motor or the control circuit fails, the stapler will be difficult to control. For example, during surgery, when the driving mechanism of the stapler fails, the screw in the stapler cannot move forward or backward, and thus the anvil and the staple magazine assembly cannot be closed or separated by the advancement or retreat of the screw. If the stapler is disassembled and parts are replaced, it is easy to cause contamination to the sterile environment during the operation, which increases the risk of the operation.

[0034] At least one embodiment of the utility model provides a handle assembly of a surgical instrument, comprising: a shell having a accommodating cavity; a spiral transmission mechanism, located in the accommodating cavity and configured to convert rotational motion into linear motion, the spiral transmission mechanism including a screw that can move linearly; a main drive mechanism, located in the accommodating cavity and configured to apply main drive energy to the spiral transmission mechanism to enable the screw to move linearly along its axial direction; an auxiliary drive mechanism, located in the accommodating cavity and configured to apply auxiliary drive energy to the spiral transmission mechanism to enable the screw to move linearly along its axial direction when the main drive mechanism stops providing the main drive energy.

[0035] At least one embodiment of the utility model provides a surgical instrument, comprising the handle assembly mentioned above.

[0036] The handle assembly of the surgical instrument and the surgical instrument provided by at least one embodiment of the utility model can, when the main drive mechanism fails to apply the main drive energy to the spiral transmission mechanism, apply the auxiliary drive energy to the spiral transmission mechanism by the auxiliary drive mechanism, thereby realizing the linear motion of the screw. In this way, even if the main drive mechanism fails during the operation, the spiral transmission mechanism can still be driven to continue working with the help of the auxiliary drive mechanism, thereby ensuring the smooth completion of the operation and improving the safety and stability of the stapler when in use.

[0037] The handle assembly of the surgical instrument and the surgical instrument are described below with reference to the accompanying drawings and through some embodiments.

[0038] Figure 1 A schematic structural diagram of a handle assembly of a surgical instrument provided by at least one embodiment of the utility model. Figure 2 A cross-sectional view of a handle assembly of a surgical instrument provided by at least one embodiment of the present invention. Figure 3 for Figure 2 A local enlarged schematic diagram is shown.

[0039] refer to Figures 1 to 3At least one embodiment of the present invention provides a handle assembly of a surgical instrument. For example, the surgical instrument is a stapler, which is used to suturing, cutting, etc. a target tissue (such as soft tissue).

[0040] For example, refer to Figure 2 and Figure 3 The handle assembly includes a housing 100, a screw transmission mechanism 200, a main drive mechanism 300, and an auxiliary drive mechanism 400. The housing 100 has a housing chamber 101. The screw transmission mechanism 200 is located in the housing chamber 101 and is configured to convert rotational motion into linear motion. The screw transmission mechanism 200 includes a screw rod 210 that can move linearly. For example, a stop pin 201 may be provided on the screw rod 210 to prevent the screw rod 210 from rotating, thereby ensuring that the screw rod 210 moves linearly. The linear motion of the screw rod 210 refers to the movement of the screw rod 210 close to the end effector (for example, Figure 2 +L direction shown) and movement away from the end effector (e.g. Figure 2 The main drive mechanism 300 is located in the accommodating chamber 101 and is configured to apply main drive energy to the screw transmission mechanism 200 to drive the screw 210 along its axial direction L (eg Figure 2 The auxiliary drive mechanism 400 is located in the accommodating chamber 101 and is configured to apply auxiliary drive energy to the screw transmission mechanism 200 to make the screw 210 move linearly along the axial direction L when the main drive mechanism 300 stops providing the main drive energy.

[0041] Figure 4 A schematic diagram of the partial structure of a surgical instrument provided by at least one embodiment of the utility model.

[0042] For example, refer to Figure 4 The surgical instrument further includes an end effector (also called a jaw), which includes a nail magazine assembly 10 and a nail anvil 20 that can be matched. The opening or closing of the jaw is controlled by a closing mechanism, and the movement of the closing mechanism is controlled by a screw 210. For example, when the screw 210 moves in a direction close to the end effector (for example Figure 4 +L direction shown), the closing mechanism can also be driven to move toward the direction close to the end effector, so that the closing mechanism is sleeved on the jaws to close the jaws; when the screw 210 moves toward the direction away from the end effector (for example Figure 4 The -L direction shown in the figure can drive the closing mechanism to move away from the end effector, so that the closing mechanism is separated from the jaws and the jaws are opened. Therefore, the opening or closing of the jaws is associated with the linear motion of the screw.

[0043] For example, the main driving mechanism 300 is coupled to a driving output shaft of a motor (not shown), and applies main driving energy to the screw transmission mechanism 200 under the driving of the driving output shaft to make the screw 210 perform linear motion along the axial direction L thereof.

[0044] refer to Figure 2 and Figure 3 When the main driving mechanism 300 is unable to apply the main driving energy to the screw transmission mechanism 200, the auxiliary driving mechanism 400 can apply the auxiliary driving energy to the screw transmission mechanism 200, thereby realizing the linear motion of the screw 210. Thus, the screw transmission mechanism 200 can be driven by two different driving energies, thereby preventing the surgical instrument using the handle assembly from malfunctioning during use. For example, when the main driving mechanism 300 fails and cannot drive the screw 210 to move linearly, the auxiliary driving mechanism 400 can be used to drive the screw 210 to move, so as to ensure the completion of the operation.

[0045] refer to Figure 2 and Figure 3 It can be understood that, since the main driving mechanism 300 is in driving connection with the spiral transmission mechanism 200, and the auxiliary driving mechanism 400 is in driving connection with the spiral transmission mechanism 200, when the main driving mechanism 300 drives the spiral transmission mechanism 200 to move, the auxiliary driving mechanism 400 can also move accordingly. Correspondingly, when the auxiliary driving mechanism 400 drives the spiral transmission mechanism 200 to move, the main driving mechanism 400 can also move accordingly.

[0046] refer to Figure 2 and Figure 3 In some examples, the screw transmission mechanism 200 further includes a gear assembly 220 meshing with the screw rod 210 , and the gear assembly 220 is configured to rotate about a rotation axis R parallel to the axial direction L to enable the screw rod 210 to move linearly along the axial direction L.

[0047] For example, the gear assembly may be provided with only one gear meshing with the screw thread, thereby simplifying the structure. For example, the gear assembly may also be provided with multiple gears for transmission connection, which will not be described in detail here. Figure 2 and Figure 3 , the gear assembly 220 rotates in a first direction (eg Figure 5 When the screw 210 rotates in the direction F1 shown in the figure, the screw 210 moves in the direction away from the end effector. Figure 5 When the screw 210 rotates in the F2 direction as shown, the screw 210 moves toward the direction close to the end effector. The present invention is described by taking the gear assembly including only one gear (ie, the driven gear 221 described later) as an example.

[0048] refer to Figure 2 and Figure 3 The main driving mechanism 300 includes a main driving gear assembly 301 arranged along the first radial direction Y1 of the screw 210, and the main driving gear assembly 301 is meshed with the gear assembly 220 to transmit the main driving energy to the gear assembly 220. For example, the main driving gear 310 in the main driving gear assembly 301 is meshed with the driven gear 221 in the gear assembly 220, so that the main driving energy can be transmitted to the gear assembly 220 through the main driving gear assembly 301, thereby driving the screw 210 to perform linear motion. The main driving gear 310 and the driven gear 221 will be described in detail later.

[0049] refer to Figure 2 and Figure 3 The auxiliary drive mechanism 400 includes an auxiliary drive gear assembly 401 disposed along the second radial direction Y2 of the screw 210, and the auxiliary drive gear assembly 401 is meshed with the gear assembly 220 to transmit the auxiliary drive energy to the gear assembly 220. For example, the auxiliary drive gear 410 in the auxiliary drive gear assembly 401 is meshed with the driven gear 221 in the gear assembly 220, so that the auxiliary drive energy can be transmitted to the gear assembly 220 through the auxiliary drive gear assembly 401, thereby driving the screw 210 to perform linear motion. The auxiliary drive gear 410 will be described in detail later.

[0050] Figure 5 It is a schematic diagram of the first radial direction and the second radial direction in at least one embodiment of the utility model.

[0051] refer to Figures 2 to 5 , the second radial direction Y2 is different from the first radial direction Y1. For example, the first radial direction Y1 and the second radial direction Y2 can be different radial directions emitted from the axis of the screw 210. Thus, the main drive gear assembly 301 and the auxiliary drive gear assembly 401 can drive the screw 210 from different positions, that is, apply driving force to the screw 210 from different radial directions. For example, the first radial direction Y1 can be perpendicular to the axial direction L, the second radial direction Y2 can be perpendicular to the axial direction L, and the angle α between the first radial direction Y1 and the second radial direction Y2 is greater than zero and less than or equal to 180 degrees. Thus, when the main drive mechanism fails, the positions of the main drive gear assembly 301 and the auxiliary drive gear assembly 401 on the handle assembly can be flexibly set under the premise of ensuring that the auxiliary drive mechanism can apply auxiliary drive energy to the spiral transmission mechanism to drive the screw to move linearly. In the embodiment of the utility model, the angle α between the first radial direction Y1 and the second radial direction Y2 is 180 degrees, which can increase the auxiliary drive function without changing the existing internal structure of the handle assembly, thereby reducing the difficulty of design and manufacturing.

[0052] refer to Figure 2 and Figure 3 In some examples, the gear assembly 220 includes a driven gear 221. For example, the driven gear 221 can be sleeved outside the screw 210. The main driving gear assembly 301 includes a main driving gear 310 meshing with the driven gear 221, and the auxiliary driving gear assembly 401 includes an auxiliary driving gear 410 meshing with the driven gear 221.

[0053] refer to Figure 2 and Figure 3 , the main driving gear 310 is configured to rotate about a rotation axis R1 parallel to the first radial direction Y1 to drive the driven gear 221 to rotate about a rotation axis R parallel to the axial direction L. For example, when the main driving gear 310 is rotated in the clockwise direction ( Figure 3 When the driven gear 221 rotates in a first rotation direction (eg, Figure 5 When the main drive gear 310 rotates in the counterclockwise direction, the driven gear 221 rotates in the second rotation direction (for example, Figure 5 The main drive gear 310 rotates in the F2 direction, thereby driving the screw rod to move toward the end effector. The rotation of the main drive gear 310 can drive the driven gear 221 to rotate, thereby driving the screw rod 210 to move in a straight line.

[0054] refer to Figure 2 and Figure 3 , the auxiliary driving gear 410 is configured such that when the main driving gear 310 stops driving the driven gear 221 to rotate, the auxiliary driving gear 410 rotates around the rotation axis R2 parallel to the second radial direction Y2 to drive the driven gear 221 to rotate around the axis of the screw 210. For example, when the auxiliary driving gear 410 rotates in the clockwise direction ( Figure 3 When the driven gear 221 rotates in the second rotation direction (eg Figure 5 When the auxiliary drive gear 410 rotates in the counterclockwise direction, the driven gear 221 rotates in the first rotation direction (for example, Figure 5 When the main driving gear 310 cannot provide the main driving energy to the driven gear 221, the auxiliary driving gear 410 can provide the driven gear 221 with auxiliary driving force, thereby driving the screw 210 to move in a straight line.

[0055] refer to Figure 2 , Figure 3 and Figure 5In some examples, the second radial direction Y2 is opposite to the first radial direction Y1, and the main drive gear assembly 301 and the auxiliary drive gear assembly 401 are arranged in a mirror-symmetrical manner relative to the axis direction L. That is, the main drive gear assembly 301 and the auxiliary drive gear assembly 401 are respectively located on opposite sides of the screw 210, so that the arrangement between the screw transmission mechanism 200, the main drive mechanism 300 and the auxiliary drive mechanism 400 is more compact. For example, the rotation axis R1 of the main drive gear 310 is parallel to the rotation axis R2 of the auxiliary drive gear 410.

[0056] Figure 6 A partial structural cross-sectional view of a handle assembly of a surgical instrument provided by at least one embodiment of the present utility model.

[0057] refer to Figures 2 to 6 In some examples, the gear assembly 220 further includes a nut 222; the driven gear 221 is sleeved outside the nut 222 and is configured to be fixedly connected to the nut 222 to rotate together around a rotation axis R parallel to the axial direction L; the screw 210 is inserted into the nut 222 and is threadedly engaged with the nut 222. Through the above arrangement, the driven gear 221 and the nut 222 can be axially positioned while rotating synchronously, which is conducive to converting the rotational motion of the driven gear 221 into the linear motion of the screw 210. For example, the driven gear 221 and the nut 222 are interference fit. For example, a mounting groove can be opened on the nut 222, and the mounting groove is configured to accommodate a part of the structure of the driven gear 221, so that the driven gear 221 is fixedly connected to the nut 222, and the driven gear 221 is axially limited at the same time.

[0058] refer to Figures 2 to 6 In some examples, the handle assembly further includes a support member 500 located in the accommodating cavity 101, and the support member 500 includes a main body 530, a first support portion 510, and a second support portion 520. The main body 530 is configured to support the screw transmission mechanism 200, the first support portion 510 is configured to support the main driving mechanism 300, and the second support portion 520 is configured to support the auxiliary driving mechanism 400.

[0059] refer to Figures 2 to 6 The main body 530 includes a first end 531 and a second end 532 opposite to each other in the extension direction thereof, the first support portion 510 is connected to the first end 531, and the second support portion 520 is connected to the second end 532. By providing the first support portion 510, the main drive mechanism 300 can be fixed in place, and by providing the second support portion 520, the auxiliary drive mechanism 400 can be fixed in place. For example, the extension direction of the main body 530 is perpendicular to the axial direction L, and the extension directions of the first support portion 510 and the second support portion 520 are both parallel to the axial direction L.

[0060] refer to Figures 2 to 6 In some examples, the first support portion 510 and the second support portion 520 are positioned to be mirror-symmetrical relative to the axial direction L, so that the main driving gear assembly 301 and the auxiliary driving gear assembly 401 are mirror-symmetrical relative to the axial direction L.

[0061] refer to Figures 2 to 6 In some examples, at least part of the screw transmission mechanism 200 passes through the main body 530 along the axial direction L, so that the screw transmission mechanism 200 can be supported by the main body 530, so that the screw 210 can rotate around the rotation axis R parallel to the axial direction L. For example, a limiting groove is provided on the side of the main body 530 facing the nut 222, and a flange is provided on the outer surface of the nut 222, and at least part of the flange extends into the limiting groove, so that the nut 222 is axially limited by the support member 500. For example, the flange and the limiting groove can be clearance-matched to facilitate the rotation of the nut 222 relative to the main body 530.

[0062] refer to Figures 2 to 6 At least part of the main driving mechanism 300 passes through the first supporting portion 510 along the first radial direction Y1, so that the main driving mechanism 300 can be supported by the first supporting portion 510, so that the main driving gear 310 can rotate around the rotation axis R1 parallel to the first radial direction Y1.

[0063] refer to Figures 2 to 6 At least part of the auxiliary driving mechanism 400 passes through the second supporting portion 520 along the second radial direction Y2, so that the auxiliary driving mechanism 400 can be supported by the second supporting portion 520, so that the auxiliary driving gear 410 can rotate around the rotation axis R2 parallel to the second radial direction Y2.

[0064] refer to Figures 1 to 6 In some examples, the surgical instrument includes an axis assembly 600. The housing 100 is configured to have a gripping portion 110 suitable for gripping and a connecting portion 120 connected to the gripping portion 110, at least a portion of the connecting portion 120 extending along the axial direction L and configured to be detachably connected to the axis assembly 600. For example, an end effector may be provided at one end of the axis assembly 600 away from the housing 100. For example, the end effector may include a staple cartridge assembly 10 and a staple anvil 20, and staples may be provided in the staple cartridge assembly 10 to achieve suturing of the target tissue. For example, the screw 210 may drive the closing drive component 601 to move in a straight line, and the closing drive component 601 may further control the closing mechanism to move in a straight line, thereby achieving the opening or closing of the jaws.

[0065] refer to Figure 3 and Figure 6The connecting portion 120 is provided with a first opening 121 communicating with the accommodating cavity 101, and at least part of the auxiliary driving mechanism 400 is located in the first opening 121. For example, part of the structure of the auxiliary driving gear 410 is located in the first opening 121. Thus, on the one hand, the auxiliary driving mechanism 400 can be directly observed through the first opening 121, and on the other hand, it is convenient for the auxiliary driving source to be inserted into the first opening and operate the auxiliary driving mechanism 400.

[0066] Figure 7 A schematic diagram of the use process of a handle assembly of a surgical instrument provided by at least one embodiment of the utility model. Figure 8 for Figure 7 A local enlarged schematic diagram of point B is shown.

[0067] refer to Figure 7 and Figure 8 , and combined with Figure 6 As shown, in some examples, the surgical instrument includes an auxiliary drive source 700, which is configured to be detachably connected to the auxiliary drive mechanism 400 through the first opening 121 and to apply an auxiliary drive force to the auxiliary drive mechanism 400. Thus, the auxiliary drive mechanism 400 can be driven by the auxiliary drive source 700. For example, when the main drive mechanism 300 applies the main drive energy to the spiral transmission mechanism 200, the auxiliary drive source 700 does not need to be connected to the auxiliary drive mechanism 400. When the main drive mechanism 300 stops providing the main drive energy, the auxiliary drive source 700 can be connected to the auxiliary drive mechanism 400 to drive the screw 210 of the spiral transmission mechanism 200 to perform linear motion through the auxiliary drive force applied by the auxiliary drive source 700.

[0068] refer to Figures 1 to 8 In some examples, the auxiliary driving source 700 includes a manual member 701. The auxiliary driving gear 410 includes a gear portion 411 and a coupling portion 412 connected to the gear portion 411. For example, the gear portion 411 is meshed with the driven gear 221.

[0069] refer to Figures 1 to 8For example, the manual member 701 is constructed to be operably connected to the joint 412 so that the auxiliary drive gear 410 rotates under the action of the manual member 701. For example, part of the structure of the joint 412 is located in the first opening 121, so as to facilitate the connection between the manual member 701 and the joint 412. For example, the manual member 701 can apply an auxiliary driving force to the auxiliary drive gear 410 by manually applying force. For example, a rotation mark can be provided on the surface of the manual member 701 to prompt the user of the driving direction corresponding to the rotation direction (for example, clockwise rotation will drive the screw forward, and counterclockwise rotation will drive the screw backward). For example, a mounting structure (for example, a hexagonal groove) can be provided on the top of the manual member 701 to facilitate the user to apply force to the manual member 701 through other components (for example, a hexagonal wrench).

[0070] refer to Figures 1 to 8 For example, a positioning ring groove may be provided on the joint portion 412, and the auxiliary drive gear assembly 401 may further include a snap ring 420 (see Figure 3 ), when the auxiliary drive mechanism 400 is supported by the second support portion 520, the auxiliary drive gear 410 can be axially limited by the snap ring 420. For example, a snap ring can also be provided on the main drive gear 310 to axially limit the main drive gear 310, and the present invention does not limit this.

[0071] refer to Figures 1 to 8 In some examples, the manual member 701 includes a rod body 710, and a first guide structure 711 is provided at the end of the rod body 710 (refer to Figure 8 The joint portion 412 includes an axial cavity 4121, and a second guide structure 4122 is provided on the wall of the axial cavity 4121 (refer to Figure 8 ). The first guide structure 711 and the second guide structure 4122 cooperate with each other in shape to guide part of the rod body 710 to extend into the shaft cavity 4121 and maintain the circumferential positioning of the rod body 710 and the shaft cavity 4121. Therefore, the first guide structure 711 and the second guide structure 4122 can make it easier to install and fix the manual member 701 and the engaging portion 412. In addition, through the mutual cooperation of the first guide structure 711 and the second guide structure 4122, the auxiliary drive gear 410 can rotate with the rotation of the manual member 701, preventing the manual member 701 and the auxiliary drive gear 410 from rotating relative to each other.

[0072] refer to Figures 1 to 8 For example, the surgical instrument includes a main driving source, which is configured to be connected to the main driving mechanism 300 and apply a main driving force to the main driving mechanism 300. For example, the main driving source includes a motor, and the motor output shaft can be connected to the main driving gear 310. For example, the motor can be disposed in the grip portion 110.

[0073] refer to Figures 1 to 8 For example, during the use of the surgical instrument, when the main drive source cannot provide the main drive energy (for example, when the motor fails), the surgical instrument can connect the manual member 701 with the auxiliary drive mechanism 400 (for example, the joint 412 of the auxiliary drive gear 410), thereby manually applying a driving force to the spiral transmission mechanism 200. For example, through the two driving modes of electric and manual, more choices are provided for the user, and the possibility of failure of the surgical instrument is reduced, thereby improving the safety of the use of the surgical instrument.

[0074] refer to Figure 2 , Figure 3 In some examples, the end of the gripping portion 110 away from the connecting portion 120 is provided with a second opening 111. For example, the gripping portion 110 extends in a direction perpendicular to the axial direction L, and the second opening 111 is an opening of the end of the gripping portion 110 away from the connecting portion 120 in the extending direction of the gripping portion 110. The minimum distance between the first opening 121 and the screw transmission mechanism 200 is the first distance D1 (reference Figure 3 For example, the first distance D1 is the minimum distance between any point on the edge of the first opening 121 and any point on the outer periphery of the screw 210. The minimum distance between the second opening 111 and the screw transmission mechanism 200 is the second distance D2 (refer to Figure 2 For example, the second distance D2 is the minimum distance between any point on the edge of the second opening 111 and any point on the outer circumference of the screw 210 .

[0075] refer to Figure 2 and Figure 3 , the first distance D1 is smaller than the second distance D2. Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, for example, the main driving source (e.g., a motor) is disposed in the grip portion 110, and at the same time, components such as a power supply may also be disposed in the grip portion 110 to supply power to the motor. As a result, the second opening 111 on the grip portion 110 is far away from the spiral transmission mechanism 200. For example, since the first distance D1 between the first opening 121 and the spiral transmission mechanism 200 is smaller, the manual member 701 can be more easily connected to the auxiliary driving gear 410 in the auxiliary driving mechanism 400 through the first opening 121, thereby applying auxiliary driving energy to the spiral transmission mechanism 200 through the auxiliary driving gear 410. For example, the minimum distance between the first opening 121 and the auxiliary driving gear 410 is smaller than the minimum distance between the second opening 111 and the main driving gear 310.

[0076] refer to Figure 2For example, when the main driving mechanism 300 stops providing the main driving energy during use, the power supply, motor and other components can be taken out from the grip 110 through the second opening 111, and then other manually drivable components can be inserted into the second opening 111 and connected to the main driving gear 310 for manual driving.

[0077] In some use scenarios of surgical instruments, higher requirements are placed on the environment (for example, a sterile environment is required). Figure 2 , by providing the auxiliary drive mechanism 400 and providing the first opening 121 closer to the spiral transmission mechanism 200, the manual member 701 can drive the auxiliary drive mechanism 400 more easily, and there is no need to disassemble and replace other components, which is simple to operate and reduces the risk of damaging the sterile environment. For example, the first opening 121 can be opened on a side surface of the connecting portion 120 away from the second opening 111, that is, the first opening 121 can be opened on the top wall of the connecting portion 120. Thus, when using surgical instruments, it is convenient for the user to determine the location of the first opening 121, thereby facilitating the installation of the manual member 701. In addition, whether the user is right-handed or left-handed, the first opening 121 opened on the top wall can meet the user's use needs. In some other examples, the first opening can also be opened at the side wall, rear wall, etc. of the connecting portion, as long as the manual member can be easily installed through the first opening to provide auxiliary driving energy to the auxiliary drive mechanism.

[0078] refer to Figures 4 to 8 In some examples, the surgical instrument further includes a seal 800 (see Figure 4 ), the seal 800 is detachably disposed at the first opening 121 and is configured to seal the first opening 121. Thus, when the main drive mechanism 300 is able to provide the main drive energy to the spiral transmission mechanism 200, the seal 800 can seal the first opening 121 to maintain the sealing of the surgical instrument and prevent the sterile environment from being damaged. For example, a detachable seal 800 can also be disposed at the second opening 111 to seal the second opening 111. For example, the components inside the gripping portion 110 can be replaced through the second opening 111.

[0079] refer to Figures 4 to 8 The connecting portion 120 of the housing 100 may also be provided with a receiving groove 122 (refer to Figure 8), the notch of the receiving groove 122 is connected to the first opening 121. Thus, when the sealing member 800 is sealed in the first opening 121, part of the structure of the sealing member 800 extends into the first opening 121, and part of the structure is received in the receiving groove 122. Thus, the connection between the sealing member 800 and the connecting portion 120 is smoother, and the sealing effect can also be improved. For example, the bottom wall of the receiving groove 122 has a slope, so that the sealing member 800 is easily separated from the connecting portion 120.

[0080] At least one embodiment of the present utility model provides a surgical instrument, comprising a handle assembly of any of the above embodiments.

[0081] Since the handle assembly according to the embodiment of the utility model is used for the above-mentioned surgical instrument, it also has corresponding beneficial technical effects, which will not be described in detail here.

[0082] There are a few points to note:

[0083] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the conventional designs.

[0084] (2) In the absence of conflict, features in the same embodiment or in different embodiments of the present invention may be combined with each other.

[0085] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A handle assembly for a surgical instrument, characterized in that: include: A housing having a receiving cavity; A screw transmission mechanism, located in the accommodating cavity and configured to convert rotational motion into linear motion, the screw transmission mechanism comprising a screw rod capable of linear motion; A main driving mechanism, located in the accommodating cavity and configured to apply main driving energy to the screw transmission mechanism to make the screw rod move linearly along its axis; The auxiliary drive mechanism is located in the accommodating cavity and is configured to apply auxiliary drive energy to the screw transmission mechanism to make the screw rod move linearly along the axial direction when the main drive mechanism stops providing main drive energy.

2. The handle assembly according to claim 1, characterized in that The screw transmission mechanism further comprises a gear assembly meshing with the screw, wherein the gear assembly is configured to rotate about a rotation axis parallel to the axial direction so as to make the screw move linearly along the axial direction; The main drive mechanism comprises a main drive gear assembly arranged along a first radial direction of the screw, the main drive gear assembly being meshed with the gear assembly to transmit the main drive energy to the gear assembly; The auxiliary drive mechanism comprises an auxiliary drive gear assembly arranged along the second radial direction of the screw, the auxiliary drive gear assembly meshing with the gear assembly to transmit the auxiliary drive energy to the gear assembly; Wherein, the second radial direction is different from the first radial direction.

3. The handle assembly according to claim 2, characterized in that The gear assembly includes a driven gear; the main drive gear assembly includes a main drive gear meshed with the driven gear; the auxiliary drive gear assembly includes an auxiliary drive gear meshed with the driven gear; The main driving gear is configured to rotate about a rotation axis parallel to the first radial direction to drive the driven gear to rotate about the axis direction; Wherein, the auxiliary driving gear is constructed such that when the main driving gear stops driving the driven gear to rotate, the auxiliary driving gear rotates around a rotation axis parallel to the second radial direction to drive the driven gear to rotate around the axial direction.

4. The handle assembly according to claim 2, characterized in that The second radial direction is opposite to the first radial direction, and the main driving gear assembly and the auxiliary driving gear assembly are both arranged in a mirror-symmetrical manner relative to the axial direction.

5. The handle assembly according to claim 3, characterized in that The gear assembly also includes a nut; wherein: The driven gear is sleeved outside the nut and is configured to be fixedly connected to the nut so as to rotate together around a rotation axis parallel to the axis direction; The screw rod is inserted into the nut and meshed with the nut thread.

6. The handle assembly according to any one of claims 1 to 5, characterized in that: The handle assembly also includes a support member located in the accommodating cavity; The support member includes a main body, a first support part and a second support part, wherein the main body is configured to support the screw transmission mechanism; the first support part is configured to support the main driving mechanism, and the second support part is configured to support the auxiliary driving mechanism; The main body includes a first end and a second end opposite to each other in the extension direction thereof, the first supporting portion is connected to the first end, and the second supporting portion is connected to the second end.

7. The handle assembly according to claim 6, characterized in that The first support portion and the second support portion are arranged in mirror symmetry with respect to the axis direction.

8. The handle assembly according to claim 6, wherein: At least part of the spiral transmission mechanism passes through the main body along the axial direction, at least part of the main drive mechanism passes through the first support part along the first radial direction; at least part of the auxiliary drive mechanism passes through the second support part along the second radial direction.

9. The handle assembly according to any one of claims 1 to 5, characterized in that: The surgical instrument comprises a shaft assembly; the housing is configured to have a gripping portion suitable for gripping and a connecting portion connected to the gripping portion, at least a portion of the connecting portion extends along the axis direction and is configured to be detachably connected to the shaft assembly; The connecting portion is provided with a first opening communicating with the accommodating cavity, and at least a portion of the auxiliary driving mechanism is located in the first opening.

10. The handle assembly of claim 9, wherein: The surgical instrument includes an auxiliary drive source configured to be detachably connected to the auxiliary drive mechanism through the first opening and to apply an auxiliary drive force to the auxiliary drive mechanism.

11. The handle assembly of claim 9, wherein: A second opening is formed at one end of the holding portion away from the connecting portion; Wherein, the minimum distance between the first opening and the spiral transmission mechanism is a first distance, and the minimum distance between the second opening and the spiral transmission mechanism is a second distance; The first distance is smaller than the second distance.

12. The handle assembly of claim 10, wherein: The auxiliary driving source includes a manual part; The auxiliary drive mechanism comprises an auxiliary drive gear, wherein the auxiliary drive gear comprises a gear portion and a coupling portion connected to the gear portion; The manual member is configured to be operably connected to the engaging portion so that the auxiliary driving gear rotates under the action of the manual member.

13. The handle assembly of claim 12, wherein: The manual member comprises a rod body, and a first guide structure is provided at the end of the rod body; The joint portion includes an axial cavity, and a second guide structure is provided on the wall of the axial cavity; The first guide structure and the second guide structure cooperate with each other in shape to guide a portion of the rod body to extend into the shaft cavity and maintain the circumferential positioning of the rod body and the shaft cavity.

14. The handle assembly of claim 9, wherein: The surgical instrument also includes a seal that is detachably disposed at the first opening and is configured to seal the first opening.

15. A surgical instrument, characterized in that: Comprising the handle assembly according to any one of claims 1-14.

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