Emergency release device, electric stapler, medical equipment

Abstract

The present disclosure provides an emergency disengagement device, an electric stapler, and a medical device. The emergency disengagement device is applied to medical equipment, and includes a transmission structure, a connection structure, and a drive structure. The transmission structure is used to transmit and control the operating end of the medical device; the connection structure is sleeved with the transmission structure and is movably connected with the transmission structure; the drive structure is transmission-connected to the connection structure, and is used to drive the connection structure to move axially, so that the connection structure drives the transmission structure to transmit and control the operating end; wherein, the movable connection is achieved by cooperating between the fixed position of the transmission structure and the fixed part of the connection structure to which the force applied by the connection structure is applied; wherein, when the fixed part releases the applied force and is subjected to an external force provided by the fixed position in the opposite direction of the applied force, the fixed part disengages from the fixed position, so that the connection structure and the transmission structure are emergency disengaged. Therefore, a simple and labor-saving disengagement structure can be provided, which can achieve the purpose of safe and effective disengagement in an emergency, and is safe and reliable.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to an emergency release device, an electric stapler, and medical equipment. Background Art

[0002] At present, various types of electric staplers such as laparoscopic electric staplers can realize the deflection, rotation, opening and closing of the jaws in the human body, and are one of the commonly used medical devices for minimally invasive surgery. Among them, the deflection function of the jaws can help achieve anastomosis of target tissues (such as diseased tissues) in different positions and angles in the human body, but after each anastomosis operation, the jaws must be deflected to the middle position (i.e., returned to the center). However, due to the internal complexity of the human body's internal tissues or other external factors, it is easy to cause the deflection function to fail during the jaw deflection and return process, and other electrical control function failures, which in turn causes the jaws to be unable to return to the center, making it impossible for the front end structure of the stapler used for the anastomosis operation to be successfully removed from the patient's body, which can easily turn minimally invasive surgery into open surgery, bringing unpredictable difficulties and risks to the surgery. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In order to solve the technical problem in the prior art that the electric control function of the electric stapler fails, resulting in the jaws being unable to return to their original position after deflection, the present invention provides an emergency disengagement device, an electric stapler, and a medical device.

[0005] (II) Technical solution

[0006] One aspect of the present disclosure provides an emergency disengagement device, which is applied to medical equipment, and includes a transmission structure, a connection structure and a drive structure. The transmission structure is used to transmit and control the operating end of the medical equipment; the connection structure is sleeved with the transmission structure and is movably connected with the transmission structure; the drive structure is in transmission connection with the connection structure, and is used to drive the connection structure to move axially, so that the connection structure drives the transmission structure to perform transmission control on the operating end; wherein, the movable connection is achieved by matching the fixed position of the transmission structure with the fixed part of the connection structure to which the force applied by the connection structure is applied; wherein, when the fixed part releases the applied force and is subjected to an external force provided by the fixed position in the opposite direction of the applied force, the fixed part is disengaged from the fixed position, so that the connection structure and the transmission structure are emergency disengaged.

[0007] According to an embodiment of the present disclosure, the operating end includes a jaw assembly, and the transmission structure includes a rear deflection rod and a quick-change head. One end of the rear deflection rod is connected to the jaw assembly for transmission and control of the jaw assembly to deflect and return; the quick-change head is sleeved in the connection structure, and one end is connected to one end of the rear deflection rod.

[0008] According to an embodiment of the present disclosure, the quick-change head has a fixing position arranged in an annular manner on the outer surface, and the fixing position is an annular V-shaped groove that cooperates with the fixing piece.

[0009] According to an embodiment of the present disclosure, the connection structure includes a connection seat, a sleeve and a compression sleeve. The connection seat is in transmission connection with the driving structure; the sleeve is arranged on the end surface of the connection seat facing the transmission structure, and is a cylindrical shell structure for sleeve-mounting the quick-change head; the compression sleeve is sleeved with the sleeve to provide force to the fixing member.

[0010] According to an embodiment of the present disclosure, the diameter of the connecting seat is greater than the diameter of the sleeve, and the connecting structure further comprises at least two push blocks. The at least two push blocks are symmetrically arranged on the outer surface of the pressing sleeve, and are used to drive the pressing sleeve to move along the outer surface of the sleeve when subjected to an axial thrust, so that the pressing sleeve releases the force applied to the fixing member.

[0011] According to an embodiment of the present disclosure, the sleeve includes an annular groove and a plurality of fixing holes. The annular groove is concavely arranged on the annular surface of the sleeve port near the transmission structure side; the plurality of fixing holes are evenly distributed along the annular groove and are arranged corresponding to the annular V-shaped groove of the quick-change head.

[0012] According to an embodiment of the present disclosure, the connection structure further includes a limiting ring and a compression sleeve spring. The limiting ring is arranged in the annular groove, wherein the height of the limiting ring protruding from the outer surface of the sleeve is greater than the distance between the outer surface of the compression sleeve and the inner surface of the sleeve; the compression sleeve spring is sleeved on the sleeve and located between the outer surface of the sleeve and the inner surface of the compression sleeve, and one end of the compression sleeve spring abuts against the compression sleeve, and the other end abuts against the end surface where the connecting seat and the sleeve are connected, so that the compression sleeve abuts against the limiting ring.

[0013] According to an embodiment of the present disclosure, the fixing member includes a plurality of fixing beads, and the plurality of fixing beads are arranged in a one-to-one corresponding manner with the plurality of fixing holes. When the inner surface of the press sleeve contacts the plurality of fixing beads, the press sleeve provides an applied force to the fixing beads, pressing part of the fixing beads into the annular V-groove of the quick-change head, so that the connecting structure and the transmission structure are movably connected; when the press sleeve is subjected to an axial thrust of the sleeve, the inner surface of the press sleeve is disengaged from the plurality of fixing beads, so that the press sleeve releases the applied force provided to the fixing beads, and when the quick-change head moves axially, the inner inclined surface of the annular V-groove generates a radial external force on the fixing beads in the opposite direction to the applied force, and the fixing beads are disengaged from the annular V-groove, so that the connecting structure and the transmission structure are disconnected, thereby achieving emergency disconnection.

[0014] According to an embodiment of the present disclosure, the connection seat further comprises a limit groove and a transmission channel. The limit groove is provided on the outer surface of the connection seat; the transmission channel is provided through the connection seat, with one end opening toward the driving structure.

[0015] According to an embodiment of the present disclosure, the connection structure further comprises a floating block. The floating block matches the limiting groove and is arranged on the connection seat, wherein the floating block is provided with a rotation positioning hole along the axial direction, and the rotation positioning hole penetrates the floating block.

[0016] According to an embodiment of the present disclosure, the driving structure includes a central frame, a motor assembly and a gear assembly. The central frame is used as a supporting structure of the driving structure; the motor assembly is arranged in the middle open space of the central frame; the gear assembly is connected to the output end of the motor assembly, and is passed through the end surface of the central frame facing the connecting structure to be transmission-connected with the connecting structure.

[0017] According to an embodiment of the present disclosure, the driving structure further includes a lead screw, a positioning plate and a positioning flange. One end of the lead screw is connected to the output end of the gear assembly, and the other end is connected to the connecting seat by passing through the rotation positioning hole of the floating block; the positioning plate is arranged between the connecting seat and the end face of the central skeleton facing the connecting structure, wherein the lead screw passes through the positioning plate; one end of the positioning flange is fixed to the positioning plate, and the other end is located in the transmission channel of the connecting seat, and the main body moves axially along the transmission channel, which is used to limit the rotation of the connecting structure; wherein, when the lead screw is subjected to the rotational force transmitted by the gear assembly, the lead screw rotates along the rotation positioning hole of the floating block, and under the limiting action of the positioning flange, the connecting structure moves axially relative to the positioning plate.

[0018] Another aspect of the present disclosure provides an electric stapler, which includes a jaw assembly and the above-mentioned emergency disengagement device. The jaw assembly is used as the operating end of the electric stapler; the transmission structure of the above-mentioned emergency disengagement device is connected to the jaw assembly, and is used to realize the return of the jaw assembly through the emergency disengagement of the connection structure of the emergency disengagement device and the transmission structure.

[0019] Another aspect of the present disclosure provides a medical device, which includes the above-mentioned emergency release device.

[0020] (III) Beneficial effects

[0021] The present disclosure provides an emergency disengagement device, an electric stapler, and a medical device. The emergency disengagement device is applied to medical equipment, and includes a transmission structure, a connection structure, and a drive structure. The transmission structure is used to transmit and control the operating end of the medical device; the connection structure is sleeved with the transmission structure and is movably connected with the transmission structure; the drive structure is transmission-connected to the connection structure, and is used to drive the connection structure to move axially, so that the connection structure drives the transmission structure to transmit and control the operating end; wherein, the movable connection is achieved by cooperating between the fixed position of the transmission structure and the fixed part of the connection structure to which the force applied by the connection structure is applied; wherein, when the fixed part releases the applied force and is subjected to an external force provided by the fixed position in the opposite direction of the applied force, the fixed part disengages from the fixed position, so that the connection structure and the transmission structure are emergency disengaged. Therefore, a simple and labor-saving disengagement structure can be provided, which can achieve the purpose of safe and effective disengagement in an emergency, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a structural explosion diagram from one perspective of an emergency release device according to an embodiment of the present disclosure is shown;

[0023] Figure 2 Schematically shows the corresponding Figure 1 A structural diagram of the emergency release device from one perspective;

[0024] Figure 3 A schematic diagram of an exploded view of the structure of an emergency release device according to an embodiment of the present disclosure from another perspective is shown;

[0025] Figure 4 Schematically shows the corresponding Figure 3 A structural diagram of the emergency release device from another perspective;

[0026] Figure 5 A partial cross-sectional composition diagram of an emergency release device according to an embodiment of the present disclosure is schematically shown;

[0027] Figure 6 The structural composition diagram of the electric stapler according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of various elements and methods are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0030] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present disclosure.

[0031] Moreover, the shapes and sizes of the components in the figures do not reflect the real size and proportion, but only illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference symbols between brackets shall not be constructed as limiting the claims.

[0032] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0033] The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., to modify the corresponding elements, do not themselves mean that the elements have any ordinal numbers, nor do they represent the order of one element and another element or the order of manufacturing methods. The use of these ordinal numbers is only used to clearly distinguish a component with a certain name from another component with the same name.

[0034] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and set in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into multiple submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose. Furthermore, in a unit claim that lists several devices, several of these devices may be embodied by the same hardware item.

[0035] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various disclosed aspects, in the above description of the exemplary embodiments of the present disclosure, the various features of the present disclosure are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: the claimed disclosure requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims below, the disclosed aspects lie in less than all the features of the single embodiment disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present disclosure.

[0036] In view of the failure of the electric control function of the electric stapler, such as the jaws being unable to return to the correct position after deflection, there are different products in the prior art that can manually return the jaws to the correct position through emergency operation. However, the existing products also have certain problems:

[0037] (1) Some products use the direct disengagement method. The technical concept is to directly disengage the connection device between the rear deflection rod and the deflection motor to achieve the effect of disengaging the rear deflection rod from the motor, thereby releasing the freedom of the jaws to deflect left and right. The direct disengagement method has a simple structure and is easy to operate. However, after the instrument is deflected and fired, the push-pull force on the rear deflection rod is large, resulting in a large friction force for the vertical disengagement of the connection device. The user needs to provide a large force to disengage the connection device during operation. During the operation, the jaws are still not separated from the target tissue. A large force is likely to produce a large swing amplitude, which may cause varying degrees of damage to the target tissue.

[0038] (2) For the situation described in (1) above, some other products use a looser connection between the rear deflection rod and the motor to avoid requiring the user to provide a large force for disengagement. Although this achieves a smaller required force, the looser fit brings the risk of easy disengagement. The rear deflection rod and the motor may even be directly disengaged due to vibration or falling of the product during transportation, causing the product to lose its deflection function before use.

[0039] (3) Some products use auxiliary tools to disconnect the connection between the rear deflection rod and the motor. However, the operation steps of such auxiliary tools are generally complicated and time-consuming. In emergency situations during surgical operations, if a large amount of time is spent on operating the instrument, it may cause some unpredictable risks.

[0040] In order to solve the technical problem in the prior art that the failure of the electric control function of the electric stapler leads to the inability to return the jaws to the original position, the present invention provides an emergency disengagement device, an electric stapler, and a medical device as a simple and labor-saving disengagement device. The device is safe and reliable before being activated and is not easy to disengage. Once an emergency occurs, the operation is simple and the operator needs to apply less force, thereby achieving the purpose of safe and effective disengagement in an emergency.

[0041] like Figure 1-Figure 5 As shown, one aspect of the present disclosure provides an emergency release device, which is applied to medical equipment and includes a transmission structure, a connection structure and a drive structure.

[0042] The transmission structure is used for transmission control of the operating end of the medical device;

[0043] The connecting structure is sleeved with the transmission structure and is movably connected with the transmission structure;

[0044] The driving structure is transmission-connected to the connecting structure, and is used to drive the connecting structure to move axially, so that the connecting structure drives the transmission structure to perform transmission control on the operating end;

[0045] In which, the movable connection is achieved by cooperating between the fixed position of the transmission structure and the fixing piece of the connecting structure to which the force is applied by the connecting structure; in which, when the fixing piece releases the applied force and is subjected to an external force provided by the fixed position in the opposite direction of the applied force, the fixing piece disengages from the fixed position, so that the connecting structure and the transmission structure are emergency disengaged.

[0046] The operating end of the medical device is mainly used to directly contact the target tissue and operate the target tissue. The transmission structure is connected to the operating end, and can realize the operation control of the operating end by using forward and backward movement and / or rotation operation during the controlled transmission process. Specifically, the forward and backward movement and rotation operation can be converted so that the operating end presents a responsive operation action.

[0047] The main body of the transmission structure can be sleeved inside the partial structure of the connection structure and movably connected with the connection structure. The movable connection can be a movable action including two situations of connection and disconnection, that is, in one situation, the transmission structure and the connection structure are connected together, so that the connection structure can transmit control actions to the transmission structure, such as allowing the transmission structure to move forward and backward or rotate with the connection structure, and at the same time, in another situation, the connection and connection structure are disconnected, so that the connection structure can no longer transmit control actions to the transmission structure, and the transmission structure loses transmission control over the operating end.

[0048] The driving structure is connected to the connecting structure to provide the driving force of the device, so that the connecting structure can move forward and backward or rotate relative to the driving structure along the axial direction z. Therefore, the transmission connection can be that the driving structure drives the connecting structure to perform a transmission action relative to the driving structure itself, so that the connecting structure can drive the transmission structure to move forward and backward relative to the driving structure along the axial direction, so that the connecting structure drives the transmission structure to perform transmission control on the operating end.

[0049] The transmission structure is provided with a fixed position that is movably connected with the connection structure, and the connection structure is provided with a fixing member that cooperates with the fixed position to realize the movably connected. In the connected state, the fixing member is connected with the fixed position by the applied force provided by the connection structure, so as to realize the connection between the transmission structure sleeved in the connection structure and the connection structure, and the transmission structure is fixed in the connection structure and cannot be disengaged; when the applied force on the fixing member is released, and the fixing member is subjected to an external force provided by the fixed position and the direction of the external force is opposite to the direction of the applied force, the fixing member and the fixed position will be disengaged, so that the transmission structure in the connected state is separated from the connection structure, thereby realizing the disengagement in an emergency.

[0050] Therefore, the above-mentioned embodiment of the present disclosure can effectively ensure the normal operation of the operating end in the connected state through the simple structure of setting a fixed position on the transmission structure and setting a matching fixing piece on the connection structure, and can achieve disengagement in one step without the help of other tools, and the operation is extremely simple. In addition, since the applied force of the matching connection between the fixing piece and the fixed position is released, the external force required by the fixing piece during the emergency disengagement process is small, and the influence on the transmission control of the operating end is reduced to a minimum, so as to be more conducive to the protection of the target tissue during the disengagement process. Therefore, a simple and labor-saving disengagement structure is provided to achieve the purpose of safe and effective disengagement in an emergency, which is safe and reliable.

[0051] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the operating end includes a jaw assembly, and the transmission structure includes a rear deflection rod 101 and a quick-change head 102 .

[0052] One end of the rear deflection rod 101 is connected to the jaw assembly, and is used to drive and control the jaw assembly to deflect and return;

[0053] The quick-change head 102 is sleeved in the connection structure, and one end is connected to the other end of the rear deflection rod.

[0054] The jaw assembly can serve as the operating structure of the operating end and has a rotation center. When the transmission structure moves forward and backward, the jaw assembly can be controlled to deflect or return to the left or right relative to the rotation center, thereby achieving operational control of the target tissue or releasing operational control of the target tissue.

[0055] The rear deflection rod 101 is a long rod structure, which is used as a transmission rod of the transmission structure to transmit the forward and backward movement of the transmission structure to the jaw assembly, thereby realizing the left and right deflection of the jaw assembly.

[0056] The quick-change head 102 can be fixed to the rear deflection rod 101 through the fixing part 103, and the fixing part 103 can be a structure with a fixing effect such as a rivet or a latch. The quick-change head 102 can be a cylindrical structure as a whole, can be directly sleeved inside the connection structure, and can rotate relative to the connection structure.

[0057] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the quick-change head 102 has a fixing portion a arranged in an annular manner on the outer surface, and the fixing portion a is an annular V-shaped groove that cooperates with the fixing member.

[0058] The annular V-shaped groove is formed in a closed annular recess along the middle of the main structure of the quick-change head 102 , so that the cylindrical structure of the quick-change head 102 can present a structural form in which the annular V-shaped groove is sandwiched between the front and rear structures.

[0059] The inner side surface of the annular V-shaped groove is an inclined surface. Therefore, the fixing piece is subjected to an applied force to contact the inclined surface, so that the connection between the transmission structure and the connection structure is achieved through the cooperation between the fixing position and the fixing piece. When the applied force on the fixing piece is released and an external force opposite to the applied force is applied, the fixing position and the fixing piece are separated, so that the transmission structure and the connection structure are separated.

[0060] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the connection structure includes a connection seat 201 , a sleeve 202 and a pressing sleeve 203 .

[0061] The connecting seat 201 is transmission-connected to the driving structure;

[0062] The sleeve 202 is disposed on the end surface of the connecting seat 201 facing the transmission structure, and is a cylindrical shell structure, and is used for sleeve mounting the quick-change head 102;

[0063] The pressing sleeve 203 is sleeved on the sleeve 202 to provide a force to the fixing member.

[0064] The connection seat 201 is used as the main structure of the connection structure and is used to provide the main attachment structure for the connection structure. A sleeve 202 is arranged on the end surface of the connection seat 201 facing the transmission structure, so that the sleeve 202 and the connection seat 201 form an integrated structure, which is a cylindrical shell structure.

[0065] The sleeve 202 passes through the quick-change head 102 of the inner sleeve transmission structure, and the quick-change head 102 is restricted in the sleeve 202 in the connected state through a fixing piece matched with the fixing position a, and cannot move forward or backward.

[0066] The pressing sleeve 203 is sleeved on the sleeve 202 and can move forward and backward along the axial direction z relative to the sleeve 202. The inner surface of the pressing sleeve 203 has an annular force surface that contacts the fixed part. When the pressing sleeve 203 is located at the end of the sleeve 202 facing the transmission structure, the annular force surface of the pressing sleeve 203 can provide an applied force to the fixed part. When the pressing sleeve 203 is subjected to external thrust and moves back to the transmission structure along the axial direction z relative to the outer surface of the sleeve 202, the pressing sleeve 203 is disengaged from the fixed part, and the applied force on the fixed part is released. At this time, once the quick-change head 102 moves relative to the sleeve 202 along the axial direction z, the fixed part will provide a component force to the fixed part as the above-mentioned external force, so that the fixed part that is not constrained by the applied force is separated from the fixed part a.

[0067] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the diameter of the connecting seat 201 is greater than the diameter of the sleeve 202 , and the connecting structure further includes at least two push blocks 204 .

[0068] At least two push blocks 204 are symmetrically arranged on the outer surface of the pressing sleeve 203, and are used to drive the pressing sleeve to move along the outer surface of the sleeve when subjected to an axial thrust, so that the pressing sleeve releases the force applied to the fixing member.

[0069] At least two push blocks 204 are symmetrically arranged on the outer surface of the pressing sleeve 203, so that the forces exerted by the multiple push blocks 204 on the pressing sleeve 203 can be distributed as evenly as possible, thereby ensuring that the external forces exerted on each of the multiple fixings are basically the same, and it is not easy to cause the transmission structure to drive the jaw assembly to shake during the disengagement process of applying the thrust. The pushing direction of the push block 204 can be adjusted according to the user's usage habits, as long as it can ensure that the push block 204 drives the fixing part to disengage from the fixing position a.

[0070] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the sleeve 202 includes an annular groove b and a plurality of fixing holes c.

[0071] The annular groove b is concavely arranged on the annular surface of the end of the sleeve 202 close to the transmission structure side;

[0072] The plurality of fixing holes c are evenly distributed along the annular groove b and are arranged corresponding to the annular V-shaped groove of the quick-change head 102 .

[0073] An annular groove b is arranged on the outer surface of the port of the sleeve 202 along the port ring, and a plurality of fixing holes c are evenly distributed along the outer surface of the sleeve 202 adjacent to the annular groove b and facing the connecting seat 201, wherein the fixing holes c penetrate the outer surface structural layer of the sleeve 202 so that the interior can also be connected with the outside through the fixing holes c.

[0074] The fixing part can be arranged corresponding to the fixing position a of the quick-change head 102 through the fixing hole c. In the connected state, the fixing hole c and the fixing position a are in contact and connected with each other to realize the fixed connection between the transmission structure and the connecting structure. In an emergency state, the fixing hole c and the fixing position a are disengaged from each other to realize the disengagement of the transmission structure and the connecting structure.

[0075] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the connection structure further includes a limiting ring 205 and a compression sleeve spring 206 .

[0076] The limiting ring 205 is arranged in the annular groove b, wherein the height of the limiting ring 205 protruding from the outer surface of the sleeve 202 is greater than the distance between the outer surface of the pressing sleeve 203 and the inner surface of the sleeve 202;

[0077] The compression sleeve spring 206 is sleeved on the sleeve 202 and is located between the outer surface of the sleeve 202 and the inner surface of the compression sleeve 203. One end of the compression sleeve spring 206 abuts against the compression sleeve 203, and the other end abuts against the end surface where the connecting seat 201 and the sleeve 202 are connected, so that the compression sleeve 203 abuts against the limiting ring 205.

[0078] The limiting ring 205 is an annular closed ring arranged in the annular groove b. The limiting ring 205 protrudes from the outer surface of the sleeve 202, and can limit the pressing sleeve 203 arranged on the outer surface of the sleeve 202 to move back and forth on the outer surface of the sleeve 202, preventing the pressing sleeve 203 from detaching from the sleeve 202.

[0079] The compression sleeve spring 206 is sleeved on the sleeve 202, and one end of the compression sleeve spring 206 can abut against the end surface of the connecting seat 201, and the other end of the compression sleeve spring 206 can abut against the port of the compression sleeve 203, so that when the compression sleeve 203 is not subjected to thrust, the compression sleeve 203 is limited to the end of the sleeve 202 close to the limiting ring 205, and is limited by the limiting ring 205 so as not to be separated from the sleeve 202. The inner surface of the compression sleeve 203 can be provided with an annular protrusion for abutting against the compression sleeve spring 206, and the annular protrusion protrudes along the inner surface of the compression sleeve 203 toward the sleeve 202, and can contact the outer surface of the sleeve 202.

[0080] Thus, during the assembly process of the connection structure and the connection process of the transmission structure and the connection structure, the pressing sleeve 203 applies force to the fixing member, thereby preventing the fixing member from abnormally disengaging from the fixing position a, and preventing the transmission structure and the connection structure from abnormally disengaging. The limiting ring 205 can be selected from a retaining ring with the same effect according to actual conditions, and is not specifically limited.

[0081] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the fixing member includes a plurality of fixing beads 207, and the plurality of fixing beads 207 are matched and arranged in a one-to-one correspondence with the plurality of fixing holes c.

[0082] When the inner surface of the pressing sleeve 203 contacts the plurality of fixed beads 207, the pressing sleeve 203 applies force to the fixed beads 207, pressing a portion of the fixed beads 207 into the annular V-shaped groove a of the quick-change head 102, so that the connection structure is movably connected to the transmission structure;

[0083] When the pressing sleeve 203 is subjected to an axial thrust along the sleeve 202, the inner surface of the pressing sleeve 203 is disengaged from the plurality of fixed beads 207, so that the pressing sleeve 203 releases the applied force on the fixed beads 207. When the quick-change head 102 moves axially, the inner inclined surface of the annular V-groove a generates a radial external force on the fixed beads 207 in the opposite direction of the applied force, and the fixed beads 207 are disengaged from the annular V-groove a, so that the connection structure is disconnected from the transmission structure, thus achieving emergency disconnection.

[0084] Each of the multiple steel balls 207 is installed in a fixing hole c on the outer circumferential surface of the sleeve 202. In the connected state, the main part of the steel ball 207 contacts the inner inclined surface of the annular V-shaped groove, and the other parts protrude from the outer surface of the sleeve 202 and contact the inner surface of the pressing sleeve 203. The inner surface of the pressing sleeve 203 can be matched with a protrusion corresponding to the steel ball 207. The end face of the protrusion is a shallow concave surface, which is used to provide force to the steel ball while ensuring a better stabilization effect of the steel ball and preventing the steel ball from shaking and affecting the structural stability. Among them, the inner diameter of the pressing sleeve 203 matches the outer diameter of the sleeve 202, and the steel ball 207 is pressed tightly in the fixing hole c. Under the elastic force of the pressing sleeve spring 206, the pressing sleeve 203 will remain in the installation position of the steel ball 207 without external force, and press the steel ball 207 radially; the limiting ring 205 provides axial positioning for the pressing sleeve 203 and the pressing sleeve spring 206; at this time, the steel ball 207 is pressed in the outer circle V-groove a of the quick-change head 102, and the axial force is transmitted as an external force through the V-groove inclined surface of the quick-change head 102 along the radial direction opposite to the applied force.

[0085] The number of steel balls 207 can be determined based on the horizontal force and the material properties of the steel balls. If the compressive strength of the steel balls can be met and the dimensional accuracy of the steel ball fixing hole c of the sleeve 202 can be guaranteed, the more steel balls are used, the higher the system reliability.

[0086] The side of the annular V-shaped groove of the quick-change head 102 that matches the steel ball 207 is an inclined slope, and the angle of the slope can meet the actual value of the horizontal force F. Specifically, when the horizontal force on the steel ball is F, the angle of the slope is θ, and the positive pressure F between the slope and the steel ball N =F / cosθ, the vertical upward force F′=F*tanθ, the steel ball 207 is subjected to a friction force F in the opposite direction of the movement trend f =F N *f, when F′ exists and F f= 0, the steel ball 207 and the quick-change head 102 can be separated. Wherein, F' is the external force, F f To apply force.

[0087] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the connecting seat 201 also includes a limiting groove d and a transmission channel e.

[0088] The limiting groove d is formed on the outer surface of the connecting seat 201;

[0089] The transmission channel e is disposed in the connection seat 201 , with one end opening toward the driving structure.

[0090] The connection between the connecting seat 201 and the driving structure is achieved through the limiting groove d provided on the connecting seat 201. At the same time, the transmission channel e on the connecting seat 201 can enable the connecting structure to move forward and backward along the transmission channel e relative to the driving structure.

[0091] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the connection structure further includes a floating block 208 .

[0092] The floating block 208 matches the limiting groove d and is disposed on the connecting seat 201 , wherein the floating block 208 is provided with a rotation positioning hole f along the axial direction, and the rotation positioning hole f passes through the floating block 208 .

[0093] The floating block 208 is a block structure for limiting, and its main body is limited in the limiting groove d and matches the shape of the limiting groove d. The rotation positioning hole f penetrates the floating block 208 along the axial direction z for connecting the driving structure.

[0094] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the driving structure includes a central skeleton 301 , a motor assembly 302 and a gear assembly 303 .

[0095] The central frame 301 is used as a supporting structure for the driving structure;

[0096] The motor assembly 302 is disposed in the middle open space g of the central frame 301;

[0097] The gear assembly 303 is connected to the output end of the motor assembly 302 and passes through the end surface of the central frame 301 facing the connecting structure to be transmission-connected with the connecting structure.

[0098] The driving structure is used to provide driving force for the relative forward and backward movement of the connecting structure, wherein the central skeleton 301 serves as the main structure of the driving structure, the motor assembly 302 arranged in the open space g of the central skeleton 301 serves as the power structure of the driving structure, and the gear assembly 303 serves as the power output structure of the motor assembly, and is connected to the connecting seat 201 of the connecting structure through a floating block.

[0099] like Figure 1-Figure 5 As shown, according to an embodiment of the present disclosure, the driving structure further includes a lead screw 304 , a positioning plate 305 and a positioning flange 306 .

[0100] One end of the lead screw 304 is connected to the output end of the gear assembly 303, and the other end is connected to the connecting seat 201 by passing through the rotation positioning hole f of the floating block 208;

[0101] The positioning plate 305 is disposed between the connecting seat 201 and the end surface of the central frame 301 facing the connecting structure, wherein the lead screw 304 penetrates the positioning plate 305;

[0102] One end of the positioning flange 306 is fixed on the positioning plate 305, and the other end is located in the transmission channel e of the connecting seat 201, and the main body moves axially along the transmission channel e to limit the rotation of the connecting structure;

[0103] When the lead screw 304 is subjected to the rotational force transmitted by the gear assembly 303 , the lead screw 304 rotates along the rotation positioning hole f of the floating block 208 , and under the restriction of the positioning flange 306 , the connection structure moves axially relative to the positioning plate 305 .

[0104] The end of the central skeleton 301 facing the connecting structure is provided with a bearing mounting hole, and a lead screw bearing is matched on the bearing mounting hole. A lead screw 304 is passed through the middle of the lead screw bearing. The lead screw 304 passes through the above-mentioned end of the central skeleton 301 and is located between the connecting structure and the gear assembly located in the open space g, that is, the connecting structure, the lead screw, the lead screw bearing, the end of the central skeleton, the gear assembly 303 and the electrode assembly 302 are arranged in sequence. At the same time, the other end of the lead screw 304 is matched with the rotation positioning hole f of the floating block 208. The lead screw 304 can be a rod-shaped structure with a thread on the outer surface, and the inner surface of the rotation positioning hole f has a thread design that matches the thread on the outer surface of the lead screw 304, so that the lead screw 304 moves forward and backward relative to the floating block 208 when rotating.

[0105] The positioning plate 305 is located between the end of the central skeleton 301 and the connecting structure. Another bearing mounting hole is provided on the positioning plate 305 at the position for passing the lead screw 304, and another lead screw bearing is matched so that the lead screw 304 can pass through the positioning plate 305 smoothly, and can rotate relative to the positioning plate 305 and the end of the central skeleton 301 with the support of the front and rear two lead screw bearings, so as to convert the rotational motion provided by the motor assembly 302 into the front and rear linear motion of the connecting structure.

[0106] At the same time, the positioning flange 306 is a columnar structure fixed on the surface of the positioning plate 305 facing the connection structure. The cross section of the columnar structure is a non-circular shape. The positioning flange 306 can realize the positioning function of the connection structure and the drive structure through the columnar structure, preventing the connection structure from rotating relative to the drive structure due to the rotation between the lead screw 304 and the floating nut (that is, only one degree of freedom in the axial direction z remains), so that the entire connection structure can stably move forward and backward linearly relative to the drive structure along the positioning flange 306. Specifically, the transmission channel e of the connection seat 201 of the connection structure is arranged in the connection seat 201, and the internal shape formed by its internal space matches the shape of the columnar structure of the positioning flange 306.

[0107] According to the emergency release device of the embodiment of the present disclosure, Figure 1-Figure 6 As shown, the specific working process and the working principle of emergency release are further explained as follows:

[0108] The pressing sleeve 203 applies force to the steel ball 207, so that the steel ball 207 passes through the fixing hole c at the end of the sleeve 202 and is pressed into the annular V-groove of the fixing position a of the quick-change head 102 inside the sleeve 202, thereby realizing a stable connection between the transmission structure and the connecting structure, and at the same time ensuring that the quick-change head 102 is confined in the sleeve 202 and cannot escape from the sleeve 202 along the axial direction z.

[0109] At this time, the motor assembly 302 of the driving structure drives the lead screw 304 to make a rotational motion through the gear assembly 303. Since the lead screw 304 and the rotation positioning hole f of the floating block 208 are threadedly matched, and the floating block 208 is limited in the limiting groove d of the connecting seat 201 of the connecting structure, and at the same time, the positioning flange 306 and the transmission channel e of the connecting seat 201 cooperate with each other to limit the rotational movement of the connecting seat 201, when the lead screw 304 rotates in the floating block 208, it can drive the connecting structure to move forward and backward in a straight line along the axial direction z along the positioning flange 306.

[0110] Therefore, the quick-change head 102 of the transmission structure can follow the sleeve 202 to achieve forward and backward linear movement, and the rear deflection rod 101 connected to the quick-change head 102 will also follow the quick-change head 102 to achieve forward and backward movements. The rear deflection rod 101 can also be further coordinated with the middle deflection rod through riveting and other connection methods, so that when the middle deflection rod connected to the operating end such as the jaw assembly is subjected to the forward or backward movement of the rear deflection rod 101, the operating end such as the jaw assembly can cooperate to achieve left or right deflection movement or return to the center of rotation.

[0111] In the event of an emergency situation where the electric control fails, the user can apply force to the push block 204 by himself, and the force can be applied in the direction toward the drive structure, that is, toward the user. The pressing sleeve 203 is subjected to the force applied by the push block to generate an additional thrust toward the drive structure, so that the pressing sleeve 203 moves along the sleeve 202 toward the connecting seat 201, so that the force applied by the pressing sleeve 203 to the steel ball 207 is released. Since the inner side surface of the annular V-shaped groove at the fixed position a of the quick-change head 102 is an inclined surface, when the quick-change head 102 moves relative to the sleeve 202 along the axial direction z, a component force in the opposite direction of the applied force can be generated on the steel ball 207 after contacting the steel ball 207 as the above-mentioned external force. Specifically, since the operating end such as the jaw assembly is in a deflected position, the steel ball 207 is always subjected to the applied force F, and the contact surface between the quick-change head 102 and the steel ball 207 is an inclined surface, the inclined surface will generate a vertical upward component force F′=F*tanθ on the steel ball. When the inclined surface angle θ≥25°, the vertical upward component force will overcome the friction force, and the steel ball 207 has an upward movement tendency. When the pressure sleeve 203 moves backward until it is out of contact with the steel ball 207, when the quick-change head 102 moves along the axial direction z, the steel ball 207 is subjected to the upward external force and moves upward until it is separated from the fixed position a of the quick-change head 102. At this time, the quick-change head 102 is in a free state and can be withdrawn from the sleeve 202 at any time, that is, the transmission structure and the connecting structure are disengaged. At this time, the rear deflection rod 101 connected to the quick-change head 102 is also in a free state, that is, the rear deflection rod 101 is successfully separated from the driving structure, and the freedom of left and right deflection of the operating end such as the jaw assembly is released, thereby achieving the purpose of emergency deflection disengagement.

[0112] Obviously, the disengagement structure of the above-mentioned emergency disengagement device is safe and reliable, and can ensure the effective operation of the deflection mechanism when it is not started; in addition, the structure is simple to operate and can achieve disengagement in one step without the aid of other tools, which is quick and effective; moreover, the force required to operate the disengagement device is small, and the operating range is small, which protects the tissue around the jaws.

[0113] It should be noted that the appearance of each component or element involved in the above-mentioned emergency release device can be changed according to the actual application situation, and its corresponding material can also be adjusted according to the force verification result, which is not limited here.

[0114] like Figure 1-Figure 6 As shown, another aspect of the present disclosure provides an electric stapler, which includes a jaw assembly 100 and the above-mentioned emergency release device 200.

[0115] The jaw assembly 100 is used as an operating end of an electric stapler;

[0116] The transmission structure of the emergency release device 200 is connected to the jaw assembly, and is used to realize the return of the jaw assembly through the emergency release device's connection structure and the transmission structure.

[0117] Among them, the structural form and technical effect of the above-mentioned emergency release device 200 are the same as the emergency release device of the above-mentioned embodiment of the present disclosure, and will not be described in detail here.

[0118] Another aspect of the present disclosure provides a medical device, comprising the emergency release device according to any one of claims 1 to 12.

[0119] Among them, the medical device can be a device with an operating end such as a jaw assembly and can enter the human body to perform operations on target tissues to achieve minimally invasive surgery, such as an endoscope device with a jaw assembly, a microwave catheter device, etc.

[0120] So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings.

[0121] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An emergency release device, applied to medical equipment, wherein: include: A transmission structure, used for transmission control of the operating end of the medical device; A connecting structure, sleeved with the transmission structure and movably connected with the transmission structure; as well as A driving structure, which is in transmission connection with the connecting structure and is used to drive the connecting structure to move axially, so that the connecting structure drives the transmission structure to perform transmission control on the operating end; The movable connection is achieved by cooperating between the fixed position of the transmission structure and the fixed part of the connection structure subjected to the force applied by the connection structure; when the fixed part releases the applied force and is subjected to an external force provided by the fixed position in the opposite direction of the applied force, the fixed part is disengaged from the fixed position, so that the connection structure and the transmission structure are emergency disengaged; Wherein, the operating end includes a jaw assembly, and the transmission structure includes: A rear deflection rod, one end of which is connected to the jaw assembly and is used to drive and control the jaw assembly to deflect and return to the center position; A quick-change head is sleeved in the connection structure, and one end is connected to the other end of the rear deflection rod, wherein the quick-change head has a fixing position arranged around the outer surface, and the fixing position is an annular V-shaped groove that cooperates with the fixing member.

2. The device according to claim 1, wherein: The connection structure comprises: A connecting seat, drivingly connected to the driving structure; A sleeve, which is arranged on the end surface of the connecting seat facing the transmission structure and is a cylindrical shell structure, and is used for sleeve-mounting the quick-change head; A pressing sleeve is mounted on the sleeve to provide a force to the fixing member.

3. The device according to claim 2, wherein: The diameter of the connecting seat is greater than the diameter of the sleeve, and the connecting structure further comprises: At least two push blocks are symmetrically arranged on the outer surface of the pressing sleeve, and are used to drive the pressing sleeve to move along the outer surface of the sleeve when subjected to an axial thrust, so that the pressing sleeve releases the force applied to the fixing member.

4. The device according to claim 2, wherein: The sleeve comprises: An annular groove is concavely arranged on the annular surface of the end of the sleeve near the transmission structure; A plurality of fixing holes are evenly distributed along the annular groove and are arranged corresponding to the annular V-shaped groove of the quick-change head.

5. The device according to claim 4, wherein: The connection structure also includes: A limiting ring is arranged in the annular groove, wherein the height of the limiting ring protruding from the outer surface of the sleeve is greater than the distance between the outer surface of the pressing sleeve and the inner surface of the sleeve; A compression sleeve spring is sleeved on the sleeve and is located between the outer surface of the sleeve and the inner surface of the compression sleeve. One end of the compression sleeve spring abuts against the compression sleeve, and the other end abuts against the end surface where the connecting seat and the sleeve are connected, so that the compression sleeve abuts against the limiting ring.

6. The device according to claim 5, wherein: The fixing member includes a plurality of fixing beads, and the plurality of fixing beads are matched and arranged in a one-to-one correspondence with the plurality of fixing holes. When the inner surface of the pressing sleeve contacts the plurality of fixing beads, the pressing sleeve applies force to the fixing beads, pressing a portion of the fixing beads into the annular V-shaped groove of the quick-change head, so that the connection structure is movably connected to the transmission structure; When the press sleeve is subjected to an axial thrust of the sleeve, the inner surface of the press sleeve is disengaged from the multiple fixed beads, so that the press sleeve releases the applied force on the fixed beads. When the quick-change head moves axially, the inner inclined surface of the annular V-groove generates a radial external force on the fixed beads in the opposite direction to the applied force, and the fixed beads are disengaged from the annular V-groove, so that the connecting structure is disconnected from the transmission structure, thereby achieving emergency disengagement.

7. The device according to claim 2, wherein: The connecting seat also includes: A limiting groove is provided on the outer surface of the connecting seat; The transmission channel is arranged through the connection seat, and one end of the transmission channel opens toward the driving structure.

8. The device according to claim 7, wherein: The connection structure also includes: A floating block is matched with the limiting groove and is arranged on the connecting seat, wherein the floating block is provided with a rotation positioning hole along the axial direction, and the rotation positioning hole passes through the floating block.

9. The device according to claim 8, wherein: The driving structure comprises: A central skeleton, used as a supporting structure for the driving structure; A motor assembly is disposed in the middle open space of the central frame; The gear assembly is connected to the output end of the motor assembly and penetrates the end surface of the central skeleton facing the connecting structure to be transmission-connected to the connecting structure.

10. The device according to claim 9, wherein: The driving structure further includes: A lead screw, one end of which is connected to the output end of the gear assembly, and the other end of which is drivingly connected to the connecting seat by passing through the rotation positioning hole of the floating block; A positioning plate is arranged between the connecting seat and the end surface of the central frame facing the connecting structure, wherein the lead screw passes through the positioning plate; A positioning flange, one end of which is fixed to the positioning plate, and the other end of which is located in the transmission channel of the connecting seat, and the main body moves axially along the transmission channel, so as to limit the rotation of the connecting structure; When the lead screw is subjected to the rotational force transmitted by the gear assembly, the lead screw rotates along the rotation positioning hole of the floating block, and under the limiting effect of the positioning flange, the connecting structure moves axially relative to the positioning plate.

11. An electric stapler, wherein: include: The jaw assembly is used as the operating end of the electric stapler. ； The emergency release device described in any one of claims 1 to 10, wherein the transmission structure of the emergency release device is connected to the jaw assembly, and is used to realize the return of the jaw assembly through emergency release of the connection structure of the emergency release device and the transmission structure.

12. A medical device, wherein: The invention comprises the emergency release device according to any one of claims 1 to 10.

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