Shell assembly and surgical instrument

Abstract

The present disclosure relates to a housing assembly including a first housing and a second housing. The top of the first shell is rotationally connected with the top of the second shell, so that a cavity is formed inside when the first shell and the second shell are closed. A bottom buckle assembly is arranged at the bottom of the shell assembly. The bottom buckle assembly comprises a buckle receiving groove and a buckle elastic piece. The buckle receiving groove is arranged at the bottom of the first shell, and the buckle elastic sheet is arranged at the bottom of the second shell. When the first shell and the second shell are closed, the buckle elastic sheet is inserted into the buckle receiving groove and is clamped with the buckle receiving groove so as to lock the shell assembly; and when the buckle elastic sheet is pressed towards the top, the buckle elastic sheet and the buckle receiving groove are released from clamping, and the first shell and the second shell are unlocked. The utility model relates to a surgical instrument which comprises a power unit and the shell assembly, and the cavity is configured to contain the power unit.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of medical instruments, and in particular to a housing assembly and a surgical instrument. BACKGROUND

[0002] With the continuous development of laparoscopic surgery, physicians usually use a laparoscopic stapler to perform reconstruction surgery in the stomach, colorectum, etc. The electric stapler is a commonly used laparoscopic surgical instrument. The electric stapler mainly includes a handle part and a sleeve assembly and an end effector. The handle part includes a power element, which includes a circuit board, a battery, a motor and other electronic components, and has a high manufacturing cost. Through repeated use of the power element, the cost can be reduced. However, because it contains electronic components, it cannot be sterilized by using ethylene oxide / hot steam, which is a commonly used sterilization method, and cannot be reused in a sterile surgical operation. In order to reuse the power element multiple times, a housing needs to be designed to seal the power unit and form a sterile barrier to block the transmission of bacteria from the power element used multiple times out of the housing.

[0003] In the prior art, the operation of the operator to seal and unlock the housing assembly of the power unit of the electric stapler is relatively complex, and in actual operation, the locking step is easily omitted or not fully implemented, which easily causes the power unit wrapped in the housing assembly to fall and be damaged or pollute the sterile environment. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure provides a housing assembly and a surgical instrument.

[0005] According to a first aspect of the present disclosure, a housing assembly is provided, which includes a first housing and a second housing. The top of the first housing is rotationally connected to the top of the second housing, so that when the first housing and the second housing are closed, an internal cavity is formed. The bottom of the housing assembly is provided with a bottom buckle assembly, which includes a buckle receiving groove and a buckle elastic sheet. The buckle receiving groove is arranged at the bottom of the first housing, and the buckle elastic sheet is arranged at the bottom of the second housing. When the first housing and the second housing are closed, the buckle elastic sheet is inserted into the buckle receiving groove and buckled with the buckle receiving groove to lock the housing assembly; when the buckle elastic sheet is pressed towards the top direction, the buckle elastic sheet is unbuckled with the buckle receiving groove, and the first housing and the second housing are unlocked.

[0006] The shell assembly of the embodiments of the present disclosure can achieve simple locking and unlocking operations. In one aspect, the shell assembly of the embodiments of the present disclosure solves the problem of complex operation when locking the shell assembly, i.e., the shell assembly needs to be closed first and then the clasp closing feature is tightly buckled. In another aspect, the shell assembly of the embodiments of the present disclosure solves the problem of complex operation when unlocking the shell assembly, i.e., the clasp closing feature arranged at the bottom of the shell assembly needs to be first unbuckled, and then the first shell and the second shell are pulled apart. In addition, the shell assembly of the embodiments of the present disclosure also solves the problem that the power unit is easily dropped from the shell assembly when the clasp is not tightly buckled.

[0007] In one embodiment, the clasp elastic piece includes an unlocking button arranged at the bottom of the clasp elastic piece.

[0008] Preferably, the clasp receiving groove includes an opening facing the direction of the second shell, and the bottom edge of the opening is provided with a first clasp rib protruding in the top direction; the bottom of the clasp elastic piece is provided with a second clasp rib protruding in the bottom direction.

[0009] More preferably, when the first shell and the second shell are subjected to the closing operation, the second clasp rib is in contact with the first clasp rib and is pressed in the top direction against the second of the first clasp rib under the action of an external force, so that after the bottom of the second clasp rib passes over the top of the first clasp rib, the second clasp rib is abutted against the first of the first clasp rib to lock the first shell and the second shell; and when the unlocking button is pressed in the top direction until the bottom of the second clasp rib passes over the top of the first clasp rib, and the first shell rotates away from the second shell, the second clasp rib is no longer in contact with the first clasp rib, so that the first shell and the second shell are unlocked.

[0010] More preferably, the clasp elastic piece includes a first elastic piece and a second elastic piece arranged at the bottom of the first elastic piece, and the distal end of the first elastic piece is fixedly connected with the distal end of the second elastic piece and forms an included angle.

[0011] More preferably, the included angle of the clasp elastic piece is configured as follows: before the first shell and the second shell are subjected to the closing operation, the included angle is a first angle; when the second clasp rib moves in the top direction against the second of the first clasp rib under the action of an external force, the included angle decreases from the first angle to a second angle to allow the bottom of the second clasp rib to pass over the top of the first clasp rib; and after the bottom of the second clasp rib passes over the top of the first clasp rib, the included angle returns to the first angle, and the first shell and the second shell are locked.

[0012] More preferably, when the shell assembly is locked and a normal external force is applied to the shell assembly to attempt to open the shell assembly, the included angle increases.

[0013] In one embodiment, the middle region of the housing assembly further comprises a middle snap assembly, such that the housing assembly is limited in the middle region when the first housing and the second housing are closed.

[0014] Preferably, the middle snap assembly comprises a snap tab provided on one of the first housing and the second housing, and a snap region provided on the other of the first housing and the second housing, the snap tab is provided with a recess, the snap region is provided with a protrusion adapted to the recess, when the first housing and the second housing are closed and the protrusion is embedded in the recess, the first housing and the second housing are blocked, and when the protrusion is disengaged from the recess and the snap elastic tab is disengaged from the snap receiving slot, the first housing and the second housing are unblocked.

[0015] In one embodiment, at least one spring plunger is provided on the interfacing surface of one of the second housing or the first housing, each of the at least one spring plunger comprises a spring and a plunger head connected with the spring, wherein, when the first housing and the second housing are closed, the spring is in a compressed state and exerts a force on the plunger head to make the plunger head abut against the interfacing surface of the opposite side, and when the snap elastic tab is disengaged from the snap receiving slot, the force exerted by the spring on the plunger head pushes the interfacing surface of the opposite side to assist in opening the first housing and the second housing.

[0016] Preferably, a pair of spring plungers are provided on the interfacing surface of one of the second housing or the first housing, the pair of spring plungers are respectively located on two sides of the second housing or the first housing.

[0017] Preferably, the first housing is located distally to the second housing.

[0018] The present disclosure also provides a surgical instrument comprising a power unit and the housing assembly in the above embodiments, the cavity is configured to accommodate the power unit.

[0019] In the following detailed description of examples in conjunction with the accompanying drawings, more details and advantages of the examples described in detail will become clear. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some of the embodiments of the present disclosure, but not limit the present disclosure.

[0021] Figure 1 is a schematic view of a housing assembly according to an embodiment of the present disclosure in an open state;

[0022] Figure 2 is a schematic view of a housing assembly according to an embodiment of the present disclosure in an open state, the bottom of the housing assembly shows a partial cross-sectional view;

[0023] Figure 3is a schematic view of a housing assembly according to embodiments of the present disclosure in a closed state, with a partial cutaway view of the bottom of the housing assembly;

[0024] Figure 4 is a schematic view of the bottom of a proximal housing according to embodiments of the present disclosure;

[0025] Figure 5 is a schematic view of the bottom of a distal housing according to embodiments of the present disclosure;

[0026] Figure 6 is another schematic view of a housing assembly according to embodiments of the present disclosure in an open state, to show a spring plunger;

[0027] Figure 7 is another schematic view of a housing assembly according to embodiments of the present disclosure in an open state;

[0028] Figure 8A is a cross-sectional view of a housing assembly according to embodiments of the present disclosure in a closed state; and

[0029] Figure 8B is Figure 8A a bottom partial enlarged view of a housing assembly of DETAILED DESCRIPTION

[0030] So that the purposes, technical solutions and advantages of the embodiments of the present disclosure are more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some of the embodiments of the present disclosure, but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present disclosure.

[0031] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second”, and similar terms used in the description and the claims of the present patent application do not denote any order, quantity, or importance, but are used to distinguish different components. The terms “include” or “contain” and similar terms mean that the elements or objects appearing before “include” or “contain” cover the elements or objects listed after “include” or “contain” and their equivalents, and do not exclude other elements or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “up”, “down”, “left”, “right”, “top”, “bottom”, and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may

[0032] The terms "proximal" and "distal" are used herein with respect to a clinician manipulating a housing assembly of a surgical instrument. The term "proximal" refers to the portion closest to the clinician, and the term "distal" refers to the portion positioned away from the clinician.

[0033] The applicant finds that in the prior art, the operation of the operator to seal lock and unlock the housing assembly of the power unit of the electric anastomat is relatively complex. Specifically, when locking the housing assembly, it is necessary to first close the housing assembly, and then tightly fasten (lock) the buckle, which requires the whole hand including the wrist and multiple fingers to participate in the operation, including multiple subdivided steps such as rotation, turning, and double pressing; and when unlocking the housing assembly, it is necessary to first disengage (unlock) the buckle closing feature provided at the bottom of the housing assembly, and then pull apart the distal housing and the proximal housing, which also requires the whole hand to participate in the operation and multiple subdivided steps. In addition, when closing the distal housing and the proximal housing, if the operator forgets to tightly fasten the buckle or does not fasten it in place so that it is in a rotatable state, the housing assembly is in an unlocked state, and the buckle at this time may be rotated under the action of a small external force (the force to pull apart the distal housing and the proximal housing), thereby directly causing the distal housing and the proximal housing to separate and open, so that the power unit wrapped in the housing assembly falls and is damaged or contaminates the sterile environment.

[0034] To solve the above technical problems, the present disclosure provides a housing assembly, which comprises a first housing and a second housing. The top of the first housing is rotationally connected with the top of the second housing, so that an internal cavity is formed when the first housing and the second housing are closed. The bottom of the housing assembly is provided with a bottom buckle assembly, which comprises a buckle receiving groove and a buckle elastic sheet. The buckle receiving groove is provided at the bottom of the first housing, and the buckle elastic sheet is provided at the bottom of the second housing. When the first housing and the second housing are closed, the buckle elastic sheet is inserted into the buckle receiving groove and is clamped with the buckle receiving groove to lock the housing assembly; when the buckle elastic sheet is pressed towards the top direction, the buckle elastic sheet is disengaged from the buckle receiving groove, and the first housing and the second housing are unlocked.

[0035] The present disclosure will be described below through specific embodiments. In order to keep the following description of the embodiments of the present disclosure clear and concise, the detailed description of known functions and known components can be omitted. When any component of the embodiments of the present disclosure appears in more than one figure, the component can be denoted by the same reference numeral in each figure.

[0036] Specifically, in the following embodiments, the first housing is designed as the distal housing and the second housing is designed as the proximal housing. However, the first housing can be designed as the proximal housing and the second housing can be designed as the distal housing according to actual needs. In addition, the opening and closing mode of the housing assembly is not necessarily the proximal-distal opening and closing (i.e. the case where the housing assembly is composed of a proximal assembly and a distal assembly). The opening and closing mode of the housing assembly can also be left-right opening and closing, up-down opening and closing, and other feasible two-side opening and closing, i.e. the first housing can also be one of the left assembly, the right assembly, the upper assembly, the lower assembly and the single assembly.

[0037] Figure 1 is a schematic view of a housing assembly according to an embodiment of the present disclosure in an open state, Figure 2 is a schematic view of a housing assembly according to an embodiment of the present disclosure in an open state, and a partial cross-sectional view of the bottom of the housing assembly, Figure 3 is a schematic view of a housing assembly according to an embodiment of the present disclosure in a closed state, and a partial cross-sectional view of the bottom of the housing assembly. As Figures 1 to 3 shown, the housing assembly 100 includes a distal housing 110, a proximal housing 120 and a bottom buckle assembly 300. As Figure 1 described, the housing assembly 100 includes a top portion A and a bottom portion B. The housing assembly 100 can be used as a housing of a handle portion of a surgical instrument, and in the embodiments herein, it is used as a sterile protective housing of a sealed power unit of an electric anastomat. The top portion of the distal housing 110 and the top portion of the proximal housing 120 are hingedly connected by a rotating shaft 130. Therefore, the distal housing 110 can rotate relative to the proximal housing 120 around the rotating shaft 130, so as to form a closed state (as Figure 3 shown) or an open state (as Figure 1The housing assembly 100 is in a locked or unlocked state when the distal housing 110 and the proximal housing 120 are in the two states shown, respectively. When the distal housing 110 and the proximal housing 120 are closed, an internal cavity of the housing assembly 100 is formed, which can be used to accommodate a power unit that can provide power output to the execution part of the electric anastomat. Because the internal cavity contains electronic components such as circuit boards and batteries, sterilization methods such as ethylene oxide / high-temperature steam cannot be used, and bacteria can breed on the power unit that is a reusable component. In view of this, the housing assembly 100 is designed as a sterile protective housing, so that when the distal housing 110 and the proximal housing 120 are in the closed state, the housing assembly 100 is locked to form a sterile barrier, which can block the transmission of bacteria on the power unit out of the disposable housing assembly 100, and also avoid the contact of blood and other contaminants in the operation with the power unit that needs to be reused. In an embodiment, the material of the housing assembly 100 is hard plastic, which is disposable, easy to process and ensures the strength of the housing assembly 100. In an embodiment, the material of the housing assembly 100 is transparent, which facilitates the observation of the display screen of the power unit inside the housing assembly 100 and shows the working condition of the anastomat to the operator.

[0038] As shown in Figures 1 to 3 The bottom buckle assembly 300 includes a buckle receiving groove 310, a buckle elastic sheet 320 and an unlocking button 330. The buckle receiving groove 310 is arranged at the bottom of the distal housing 110, the buckle elastic sheet 320 is arranged at the bottom of the proximal housing 120, and the unlocking button 330 is arranged at the bottom of the buckle elastic sheet 320. When the distal housing 110 and the proximal housing 120 are closed, the buckle elastic sheet 320 can be inserted into the buckle receiving groove 310 and buckled with the buckle receiving groove 310 under the action of the pushing force, so as to lock the housing assembly 100, as shown in Figure 3 When the unlocking button 330 is pressed in the top direction, the buckle elastic sheet 320 is unbuckled with the buckle receiving groove 310, and the housing assembly 100 is unlocked, as shown in Figure 2 It should be noted that the housing assembly can also be unlocked without the unlocking button, specifically, when the buckle elastic sheet is pressed in the top direction, the buckle elastic sheet is unbuckled with the buckle receiving groove, and the distal housing and the proximal housing are unlocked. The bottom buckle assembly 300 has a certain holding force after the housing assembly 100 is locked, so a large resistance (deliberate force of the operator) is required to open the housing assembly 100. The bottom buckle assembly 300 according to the embodiment of the present disclosure can realize the tight closing function of the distal housing 110 and the proximal housing 120. In the embodiment, the unlocking button 330 and the buckle elastic sheet 320 are arranged on the proximal housing 120, and for most right-handed operators, the operation of pressing the proximal unlocking button 330 with the right hand and rotating the proximal housing 120 is more convenient.

[0039] The shell assembly 100 according to the embodiments of the present disclosure can achieve simple locking and unlocking operations. In one aspect, the locking operation of the shell assembly 100 is simple, and the distal shell 110 and the proximal shell 120 are simply closed so that the buckle elastic sheet 320 is inserted into the buckle receiving groove 310 and buckled with the buckle receiving groove 310, and the locking of the shell assembly 100 is completed. The closing and locking operations are completed at the same time by one action, and the locking step is not missed. In another aspect, the unlocking operation of the shell assembly 100 is simple, and the operator only needs to hold the distal shell 110 with one hand and press the unlocking button 330 at the bottom of the proximal shell 120 with one finger of the other hand, so that the buckle elastic sheet 320 is unbuckled with the buckle receiving groove 310, and the shell assembly 100 is unlocked. At this time, the distal shell 110 and the proximal shell 120 are pulled with a small force, and the action of opening the shell assembly 100 is completed.

[0040] Figure 4 is a schematic view of the bottom of the proximal shell according to the embodiments of the present disclosure, Figure 5 is a schematic view of the bottom of the distal shell according to the embodiments of the present disclosure. In one embodiment, in combination with Figure 1 、 Figure 4 and Figure 5 , the buckle receiving groove 310 includes an opening 132 facing the direction of the proximal shell 120, and the bottom edge of the opening 132 is provided with a first buckle rib 3124 protruding in the top direction. The bottom of the buckle elastic sheet 320 is provided with a second buckle rib 3242 protruding in the bottom direction. When the distal shell 110 and the proximal shell 120 are closed, the buckle elastic sheet 320 is inserted into the buckle receiving groove 310 and buckled with the buckle receiving groove 310, and at this time the second buckle rib 3242 abuts against the first buckle rib 3124, thereby better locking the shell assembly 100 at the bottom. In one embodiment, when the shell assembly 100 needs to be locked, the operator applies an external force to close the distal shell 110 and the proximal shell 120, and at this time the second buckle rib 3242 provided on the proximal shell 120 first contacts the first buckle rib 3124 provided on the distal shell 110, and then the second buckle rib 3242 is pressed to move in the top direction by abutting against the proximal side of the first buckle rib 3124 under the continuous action of the external force, so that after the bottom of the second buckle rib 3242 passes over the top of the first buckle rib 3124, the second buckle rib 3242 can abut against the distal side of the first buckle rib 3124, thereby locking the shell assembly 100, as shown in Figure 3When it is needed to unlock the housing assembly 100, the operator needs to press the unlocking button 330 towards the top direction, at this time, the bottom of the second clamping rib 3242 moves towards the top direction away from the distal side of the first clamping rib 3124, so that when the bottom of the second clamping rib 3242 passes the top of the first clamping rib 3124, the distal housing 110 rotates away from the proximal housing 120, the second clamping rib 3242 is no longer in contact with the first clamping rib 3124, at this time, one of the distal housing 110 and the proximal housing 120 can be pulled, so that the housing assembly 100 is unlocked. The bottom clamping assembly 300 according to the embodiment of the present disclosure realizes the simple operation of locking and unlocking the housing assembly 100, when it is needed to lock the housing assembly 100, only need to exert an external force to make the second clamping rib 3242 abut against the first clamping rib 3124 and pass the first clamping rib 3124 under the action of the external force, the locking of the housing assembly 100 is completed. When it is needed to unlock the housing assembly 100, only need to hold the distal housing 110 with one hand and press the unlocking button 330 at the bottom of the proximal housing 120 with the other hand to make the second clamping rib 3242 abut against the first clamping rib 3124 and pass the first clamping rib 3124 under the movement of the unlocking button 330, and pull the distal housing 110 and the proximal housing 120 with both hands, the action of opening the housing assembly 100 is completed. In this way, the locking structure formed by the bottom clamping assembly 300 is stable and reliable, and the operation is simple. It should be noted that the "top direction" in the present embodiment refers to the direction towards or approximately towards the region A, and the "bottom direction" refers to the direction towards or approximately towards the region B. In other embodiments, it can be understood that the "top" refers to one end of the first housing and the second housing rotatingly connected, and the "bottom" refers to the other end of the first housing and the second housing opposite to the "top".

[0041] With reference to the foregoing Figure 3 and Figure 4 In one embodiment, the clamping elastic piece 320 includes a first elastic piece 322 and a second elastic piece 324 arranged at the bottom of the first elastic piece 322, the distal end of the first elastic piece 322 is fixedly connected with the distal end of the second elastic piece 324 and forms an included angle 326. When the operator exerts an external force to perform the closing operation of the distal housing 110 and the proximal housing 120, during the movement of the second clamping rib 3242 towards the top of the first clamping rib 3124 abutting against the proximal side of the first clamping rib 3124 under the action of the external force, the angle of the included angle 326 decreases to allow the bottom of the second clamping rib 3242 to pass the top of the first clamping rib 3124. And after the bottom of the second clamping rib 3242 passes the top of the first clamping rib 3124, the angle of the included angle 326 restores to the initial value, at this time, the second clamping rib 3242 abuts against the distal side of the first clamping rib 3124, and the housing assembly 100 is locked, as shown in FIG. 6. Figure 3When the housing assembly 100 is locked and a large external force (a force pulling the distal housing and the proximal housing apart) is applied to the housing assembly 100 to attempt to open the housing assembly 100, the angle of the included angle 326 increases, at which time the abutting force of the second clamping rib 3242 and the distal side of the first clamping rib 3124 increases. Therefore, the housing assembly 100 according to the embodiments of the present disclosure is locked reliably, and normal external force pulling the housing assembly 100 without unlocking action, instead makes the locking of the housing assembly 100 more secure.

[0042] Reference Figure 1 and Figure 3 The middle region of the housing assembly 100 further comprises a middle clamping assembly 200, which comprises a clamping sheet 210 and a clamping region 220 corresponding to the clamping sheet 210. The middle region is the region between the top A and the bottom B, for example Figure 1 The middle clamping assembly 200 is shown in the position. The clamping sheet 210 is arranged on the distal housing 110, and the clamping sheet 210 is provided with a groove 212, wherein the groove comprises a through hole. In an embodiment, the middle position of the clamping sheet 210 is provided with the groove 212, so as to better clamp the housing assembly 100. The clamping region 220 is arranged on the proximal housing 120, and the clamping region 220 is provided with a protrusion 222, which is matched with the groove 212. In an embodiment, according to actual needs, the clamping sheet 210 is arranged on the proximal housing 120, and the clamping region 220 is arranged on the distal housing 110. When the distal housing 110 and the proximal housing 120 are closed and the protrusion 222 is embedded in the groove 212, the distal housing 110 and the proximal housing 120 form a block (as shown in Figure 3 When the distal housing 110 and the proximal housing 120 are closed and the protrusion 222 is embedded in the groove 212, the distal housing 110 and the proximal housing 120 form a block (as shown in Figure 1It is noted that "blocking" herein refers to that when the protrusions are embedded in the grooves, the distal shell and the proximal shell are blocked by the middle snap assembly 200, so that the distal shell or the proximal shell cannot move relative to each other. The middle snap assembly 200 has a certain holding force after blocking the distal shell 110 and the proximal shell 120, so that a certain resistance needs to be overcome to unblock the distal shell 110 and the proximal shell 120. The middle snap assembly 200 according to the embodiments of the present disclosure provides accurate guidance during the closing of the distal shell 110 and the proximal shell 120, and provides additional restriction to the shell assembly. The number of the middle snap assembly 200 can be set according to actual needs. In one embodiment, the number of the middle snap assembly 200 is two, specifically, one snap sheet 210 is arranged on each side of the distal shell 110, and one snap area 220 is arranged on each side of the proximal shell 120. The snap sheet 210 and the snap area 220 correspond to each other. When the distal shell 110 and the proximal shell 120 are closed and the protrusions 222 on both sides are embedded in the corresponding grooves 212, the shell assembly 100 is better locked.

[0043] Figure 6 FIG. 7 is another schematic view of the shell assembly 100 in the open state according to the embodiments of the present disclosure, showing the spring plunger 122. Figure 7 FIG. 8 is another schematic view of the shell assembly 100 in the open state according to the embodiments of the present disclosure. Figure 8A FIG. 9 is a cross-sectional view of the shell assembly 100 in the closed state according to the embodiments of the present disclosure. Figure 8B FIG. 10 is a bottom view of the shell assembly 100 according to the embodiments of the present disclosure. Figure 8A FIG. 11 is a bottom partial enlarged view of the shell assembly 100 of FIG. 10, showing the spring plunger 122. In one embodiment, at least one spring plunger 122 is arranged on the abutting surface of one of the proximal shell 120 or the distal shell 110, each of the at least one spring plunger 122 comprises a spring 1222 and a plunger head 1224 connected with the spring 1222, Figure 6 FIG. 12 shows the case that the spring plunger 122 is arranged on the abutting surface of the proximal shell 120. Preferably, a plurality of spring plungers 122 can be arranged on the bottom of the proximal shell 120, as shown in FIG. 13. Figure 6 When the distal shell 110 and the proximal shell 120 are closed, the spring 1222 is in a compressed state and exerts a force on the plunger head 1224 to make the plunger head 1224 abut against the abutting surface 112 on the opposite side (as shown in FIG. 14), specifically, after the spring plunger 122 and the abutting surface 112 on the opposite side are in contact, the plunger head 1224 gives way to the plunger hole 124 where the spring plunger 122 is located under the abutting force of the abutting surface 112 on the opposite side, so that the spring plunger 122 completely enters the plunger hole 124 when the distal shell 110 and the proximal shell 120 are closed, as shown in FIG. 15. Figure 7 Figure 8B ​When the operator unlocks the housing assembly 100, the buckle elastic sheet 320 is uncoupled from the buckle receiving slot 310, and the convex 222 is disengaged from the groove 212 when the middle buckle assembly 200 is opened, the force exerted by the spring 1222 on the head 1224 pushes the opposite side of the abutting surface 112, so that the distal housing 110 rotates a small distance to assist in opening the distal housing 110 and the proximal housing 120, and then the distal housing 110 and the proximal housing 120 are fully opened under the force of the operator. In a preferred embodiment, the proximal housing 120 is provided with a pair of spring plungers 122, which are respectively located on both sides of the proximal housing 120. Such a design facilitates the better and faster opening of the housing assembly 100 after unlocking. By providing the spring plungers 122 on the proximal housing 120, the disassembly of the housing assembly 100 becomes more labor-saving and convenient, without the need for the operator to pull the proximal housing 120 and the distal housing 110 and overcome the frictional resistance when the housing assembly is closed, to automatically complete the action of opening the housing assembly 100.

[0044] The present disclosure also relates to a surgical instrument comprising the housing assembly of any of the above embodiments. In one embodiment, the surgical instrument further comprises a power unit (not shown), and the cavity is configured to accommodate the power unit, as described above.

[0045] The housing assembly of the embodiments of the present disclosure can achieve simple locking and unlocking operations of the housing assembly. In one aspect, the locking operation of the housing assembly of at least one embodiment of the present disclosure is simple, directly closing the distal housing and the proximal housing, so that the buckle elastic sheet is inserted into and coupled with the buckle receiving slot, thereby completing the locking of the housing assembly without additional locking operation steps; in another aspect, the unlocking operation of the housing assembly is simple, the operator only needs to hold the distal housing with one hand and press the unlocking button at the bottom of the proximal housing with the other hand, so that the buckle elastic sheet is uncoupled from the buckle receiving slot, thereby completing the unlocking of the housing assembly, and then pulling the distal housing and the proximal housing with a smaller force can complete the action of opening the housing assembly. The housing assembly according to the embodiments of the present disclosure is locked reliably, and pulling the housing assembly with normal external force without unlocking action makes the locking of the housing assembly more secure; according to some embodiments of the present disclosure, by providing the spring plungers on the proximal housing, the opening of the housing assembly becomes more labor-saving and convenient, without the need to pull the proximal housing and the distal housing, so that the two housings in the housing assembly are automatically separated and the preliminary action of opening the housing assembly is completed.

[0046] Although examples of the present disclosure are provided in the foregoing description, those skilled in the art may modify and change these examples without departing from the scope and spirit of the present disclosure. For example, it should be understood that the features of the embodiments herein may be applicable to other embodiments described herein. Therefore, the description is intended to illustrate rather than to limit. The disclosure is defined by the appended claims, and all changes to the disclosure that fall within the meaning and equivalent scope of the claims will be included within their scope.

Claims

1. A housing assembly, characterized in that: The housing assembly comprises: a first housing; and The second housing is rotatably connected to the top of the first housing so that a cavity is formed inside the first housing and the second housing when the first housing and the second housing are closed. Wherein, a bottom buckle assembly is provided at the bottom of the housing assembly, and the bottom buckle assembly includes: a buckle receiving slot, the buckle receiving slot being provided at the bottom of the first housing; and A snap-on elastic sheet, the snap-on elastic sheet being arranged at the bottom of the second housing; When the first shell and the second shell are closed, the buckle elastic piece is inserted into the buckle receiving groove and engaged with the buckle receiving groove to lock the shell assembly; When the buckle elastic piece is pressed toward the top, the buckle elastic piece is released from the buckle receiving groove, and the first shell and the second shell are unlocked.

2. The housing assembly according to claim 1, wherein: The buckle elastic piece includes an unlocking button, and the unlocking button is arranged at the bottom of the buckle elastic piece.

3. The housing assembly according to claim 2, wherein: The buckle receiving slot includes an opening facing the second housing, and a bottom edge of the opening is provided with a first buckle rib protruding toward the top; The bottom of the buckle elastic piece is provided with a second buckle rib protruding toward the bottom.

4. The housing assembly according to claim 3, wherein: When the first shell and the second shell are closed, the second snap rib contacts the first snap rib and, under the action of an external force, abuts against the second end of the first snap rib and is pressed toward the top, so that after the bottom of the second snap rib passes over the top of the first snap rib, the second snap rib abuts against the first end of the first snap rib, thereby locking the first shell and the second shell; and When the unlocking button is pressed toward the top until the bottom of the second snap rib passes over the top of the first snap rib, and the first shell rotates away from the second shell, the second snap rib no longer contacts the first snap rib, so that the first shell and the second shell are unlocked.

5. The housing assembly according to claim 4, wherein: The buckle elastic piece includes a first elastic piece and a second elastic piece arranged at the bottom of the first elastic piece. The distal end of the first elastic piece is fixedly connected to the distal end of the second elastic piece and forms an angle.

6. The housing assembly according to claim 5, wherein: The angle configuration of the buckle elastic piece is: Before the first shell and the second shell perform a closing operation, the included angle is a first angle; When the second snap rib abuts against the second end of the first snap rib under the action of an external force and moves toward the top of the first snap rib, the angle decreases from the first angle to a second angle to allow the bottom of the second snap rib to pass over the top of the first snap rib; and After the bottom of the second snap rib passes over the top of the first snap rib, the angle returns to the first angle, and the first shell is locked with the second shell.

7. The housing assembly according to claim 6, wherein: When the housing assembly is locked and an abnormal external force is applied to the housing assembly in an attempt to open the housing assembly, the included angle increases.

8. The housing assembly according to claim 1, wherein: The middle region of the housing assembly further includes a middle snap assembly, so that the housing assembly is restrained in the middle region when the first housing and the second housing are closed.

9. The housing assembly according to claim 8, wherein: The middle buckle assembly includes a buckle piece provided on one of the first shell and the second shell, and a buckle area provided on the other of the first shell and the second shell, the buckle piece is provided with a groove, and the buckle area is provided with a protrusion adapted to the groove. When the first shell and the second shell are closed and the protrusion is embedded in the groove, the first shell and the second shell form a barrier, and When the protrusion is disengaged from the groove and the buckle elastic piece is released from the buckle receiving slot, the first shell and the second shell are unblocked.

10. The housing assembly according to claim 1, wherein At least one spring plunger is provided on the docking surface of the second housing or the first housing, and each of the at least one spring plunger comprises a spring and a column head connected to the spring. When the first shell and the second shell are closed, the spring is in a compressed state and applies force to the column head so that the column head presses against the opposite docking surface, and When the buckle elastic piece is released from the buckle receiving groove, the force applied by the spring to the column head pushes the opposite docking surface to assist in opening the first shell and the second shell.

11. The housing assembly according to claim 10, wherein: A pair of spring plungers is provided on the docking surface of one of the second housing or the first housing, and the pair of spring plungers is respectively located on both sides of the second housing or the first housing.

12. The housing assembly according to claim 1, wherein The first housing is located distal to the second housing.

13. A surgical instrument comprising a power unit, characterized in that: The housing assembly comprises the housing assembly according to any one of claims 1 to 12, wherein the cavity is configured to accommodate the power unit.

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