CN223452209U - Housing components and surgical instruments - Google Patents

Abstract

The present disclosure relates to a housing assembly including a first housing and a second housing. The top of the first housing is rotatably coupled to the top of the second housing such that a cavity is formed therein when the first housing and the second housing are closed. The bottom of shell subassembly is provided with bottom buckle subassembly, and bottom buckle subassembly includes buckle receiving groove and buckle elastic piece. The buckle receiving groove is arranged at the bottom of the first shell, and the buckle elastic piece is arranged at the bottom of the second shell. When the first housing and the second housing are closed, the elastic buckle sheet is inserted into the buckle receiving groove and is clamped with the buckle receiving groove so as to lock the housing assembly, and when the elastic buckle sheet is pressed towards the top direction, the elastic buckle sheet is released from the clamping connection with the buckle receiving groove, and the first housing and the second housing are unlocked. The present disclosure relates to a surgical instrument comprising a power unit and a housing assembly as described above, the cavity configured to house the power unit.

Description

Housing assembly and surgical instrument

Technical Field

The present disclosure relates to the technical field of medical devices, and in particular to a housing assembly and a surgical device.

Background

With the continued development of laparoscopic surgery, physicians often use a laparoscopic stapler to perform reconstructive surgery on the stomach, colorectal, etc. The electric anastomat is a commonly used endoscopic surgical instrument. The electric stapler basically comprises a handle portion and a sleeve assembly and an end effector. The handle part comprises a power element, and the power element comprises a circuit board, a battery, a motor and other electronic components, so that the manufacturing cost is high, and the cost can be reduced through the repeated use of the power element. However, because it contains electronic components, it cannot be reused in aseptic surgery because it cannot be sterilized by conventional sterilization methods such as ethylene oxide/high temperature steam. In order to reuse the power element multiple times, it is necessary to design a housing for sealing the power unit to form a sterile barrier that blocks bacteria on the multiple use power element from being transferred out of the housing.

In the prior art, the actions of sealing locking and unlocking the housing assembly of the power unit of the electric anastomat by an operator are complex, and the locking step is easy to miss or not completely implemented in actual operation, so that the power unit wrapped in the housing assembly is easy to fall down and damage or pollute the sterile environment.

Disclosure of utility model

Embodiments of the present disclosure provide a housing assembly and a surgical instrument.

According to a first aspect of the present disclosure, there is provided a housing assembly comprising a first housing and a second housing. The top of the first housing is rotatably coupled to the top of the second housing such that a cavity is formed therein when the first housing and the second housing are closed. The bottom of shell subassembly is provided with bottom buckle subassembly, and bottom buckle subassembly includes buckle receiving groove and buckle elastic piece. The buckle receiving groove is arranged at the bottom of the first shell, and the buckle elastic piece is arranged at the bottom of the second shell. When the first housing and the second housing are closed, the elastic buckle sheet is inserted into the buckle receiving groove and is clamped with the buckle receiving groove so as to lock the housing assembly, and when the elastic buckle sheet is pressed towards the top direction, the elastic buckle sheet is released from the clamping connection with the buckle receiving groove, and the first housing and the second housing are unlocked.

Simple locking and unlocking operations can be achieved through the housing assembly of the embodiment of the disclosure. On the one hand, the housing assembly of the disclosed embodiments solves the problem of complex operations that require closing the housing assembly before tightening the snap closure features when locking the housing assembly, and on the other hand, the housing assembly of the disclosed embodiments solves the problem of complex operations that require unlocking the snap closure features provided on the bottom of the housing assembly before pulling the first and second housings apart when unlocking the housing assembly. In addition, the housing assembly of the embodiments of the present disclosure also solves the problem that the power unit is easily dropped from the housing assembly when the fastener is not fastened.

In one embodiment, the snap-fit elastic piece comprises an unlocking button, which is arranged at the bottom of the snap-fit elastic piece.

Preferably, the buckle receiving groove comprises an opening facing the direction of the second shell, a first buckle rib protruding towards the top direction is arranged at the bottom edge of the opening, and a second buckle rib protruding towards the bottom direction is arranged at the bottom of the buckle elastic piece.

More preferably, when the first housing and the second housing perform a closing operation, the second catching rib is in contact with the first catching rib and is pressed against the second of the first catching rib to move in a top direction by an external force such that after the bottom of the second catching rib passes over the top of the first catching rib, the second catching rib abuts against the first of the first catching rib to lock the first housing and the second housing, and when the unlocking button is pressed in a top direction until the bottom of the second catching rib passes over the top of the first catching rib and the first housing is rotated away from the second housing, the second catching rib is no longer in contact with the first catching rib such that the first housing and the second housing are unlocked.

More preferably, the elastic buckle sheet comprises a first elastic sheet and a second elastic sheet arranged at the bottom of the first elastic sheet, and the distal end of the first elastic sheet is fixedly connected with the distal end of the second elastic sheet and forms an included angle.

More preferably, the included angle of the elastic buckle piece is configured to be a first angle before the first shell and the second shell are closed, the included angle is reduced from the first angle to a second angle when the second buckle rib moves towards the top of the first buckle rib under the action of external force and abuts against the second of the first buckle rib so as to allow the bottom of the second buckle rib to pass over the top of the first buckle rib, and the included angle is restored to the first angle after the bottom of the second buckle rib passes over the top of the first buckle rib, so that the first shell and the second shell are locked.

More preferably, the included angle increases when the housing assembly is locked and a normal external force is applied to the housing assembly in an attempt to open the housing assembly.

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

Preferably, the middle snap assembly comprises a snap tab provided on one of the first and second housings, and a snap area provided on the other of the first and second housings, the snap tab being provided with a groove, the snap area being provided with a protrusion adapted to the groove, the first and second housings forming a barrier when the first and second housings are closed and the protrusion is embedded in the groove, and the first and second housings releasing the barrier when the protrusion is disengaged from the groove and the snap tab is released from the snap receiving groove.

In one embodiment, at least one spring plunger is provided on the abutment surface of one of the second housing or the first housing, each of the at least one spring plunger comprising a spring and a tab connected to 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 tab to urge the tab against the opposite abutment surface, and when the snap-in resilient tab is disengaged from the snap-in receiving slot, the force exerted by the spring on the tab urges the opposite abutment surface to assist in opening the first housing and the second housing.

Preferably, a pair of spring plungers are provided on the abutting surface of one of the second housing or the first housing, the pair of spring plungers being located on both sides of the one of the second housing or the first housing, respectively.

Preferably, the first housing is located distally of the second housing.

The present disclosure also provides for a surgical instrument including a power unit and a housing assembly of the above embodiments, the cavity configured to receive the power unit.

Further details and advantages of the examples described in detail herein will become apparent from the following detailed description of the examples, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure, not to limit the present disclosure.

FIG. 1 is a schematic illustration of a housing assembly in an open state according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a housing assembly in an open state, with a bottom portion of the housing assembly shown in partial cross-section, according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a housing assembly in a closed state, with a bottom portion of the housing assembly shown in partial cross-section, according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the bottom of the proximal housing according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the bottom of the distal housing according to an embodiment of the present disclosure;

FIG. 6 is another schematic view of a housing assembly in an open state to illustrate a spring plunger according to an embodiment of the present disclosure;

FIG. 7 is another schematic view of a housing assembly in an open state according to an embodiment of the present disclosure;

FIG. 8A is a cross-sectional view of a housing assembly in a closed state according to an embodiment of the present disclosure, and

Fig. 8B is a bottom partial enlarged view of the housing assembly of fig. 8A to illustrate the spring plunger.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom" and the like are used only to indicate relative positional relationships, which may be changed accordingly when the absolute position of the object to be described is changed.

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 located away from the clinician.

Applicant has found that in the prior art, the action of the operator to seal lock and unlock the housing assembly of the electric stapler, which encloses the power unit, is relatively complex. Specifically, when the housing assembly is locked, the housing assembly needs to be closed and then the clasp is fastened (locked), the fastening action needs to involve the whole hand including the wrist and the fingers to participate in the operation, and the steps of rotating, turning over, pressing twice and the like are further included, while when the housing assembly is unlocked, the clasp closing feature arranged at the bottom of the housing assembly needs to be firstly unlocked, then the distal housing and the proximal housing are pulled apart, and the whole hand also needs to participate in the operation of the steps of subdividing. In addition, when closing the distal and proximal housings, once the operator forgets to tighten or loosen the clasp in place to make it rotatable, the housing assembly is in an unlocked state, at which time the clasp may rotate under the influence of a small external force (the force pulling the distal and proximal housings apart), thereby directly causing the distal and proximal housings to separate open, causing the power unit enclosed within the housing assembly to fall out and damage or contaminate the sterile environment.

In order to solve the technical problem, the present disclosure provides a housing assembly, which includes a first housing and a second housing. The top of the first housing is rotatably coupled to the top of the second housing such that a cavity is formed therein when the first housing and the second housing are closed. The bottom of shell subassembly is provided with bottom buckle subassembly, and bottom buckle subassembly includes buckle receiving groove and buckle elastic piece. The buckle receiving groove is arranged at the bottom of the first shell, and the buckle elastic piece is arranged at the bottom of the second shell. When the first housing and the second housing are closed, the elastic buckle sheet is inserted into the buckle receiving groove and is clamped with the buckle receiving groove so as to lock the housing assembly, and when the elastic buckle sheet is pressed towards the top direction, the elastic buckle sheet is released from the clamping connection with the buckle receiving groove, and the first housing and the second housing are unlocked.

The present disclosure is illustrated by the following specific examples. Detailed descriptions of known functions and known components may be omitted for the sake of clarity and conciseness in the following description of the embodiments of the present disclosure. When any element of an embodiment of the present disclosure appears in more than one drawing, the element may be referred to by the same reference numeral in each drawing.

Specifically, in the following embodiments, a case is given in which the first housing is a distal housing and the second housing is a proximal housing, and the first housing is designed as a proximal housing and the second housing is designed as a distal housing according to actual needs. In addition, the opening and closing manner of the housing component is not necessarily the proximal-distal opening and closing manner (i.e., the housing component is composed of a proximal component and a distal component), and the opening and closing manner of the housing component may also be left-right opening and closing, up-down opening and closing, and other feasible two-side opening and closing manners, i.e., the first housing may also be one component of a left-side component, a right-side component, an upper-side component, a lower-side component, and a single-side component.

Fig. 1 is a schematic view of a housing assembly in an open state according to an embodiment of the present disclosure, fig. 2 is a schematic view of a housing assembly in an open state according to an embodiment of the present disclosure, a bottom portion of the housing assembly showing a partial cross-sectional view, and fig. 3 is a schematic view of a housing assembly in a closed state according to an embodiment of the present disclosure, a bottom portion of the housing assembly showing a partial cross-sectional view. As shown in fig. 1-3, the housing assembly 100 includes a distal housing 110, a proximal housing 120, and a bottom snap assembly 300. As shown in fig. 1, the housing assembly 100 includes a top a and a bottom B. The housing assembly 100 may serve as a housing for the handle portion of a surgical instrument, in this embodiment, as a sterile protective housing for the sealed power unit of an electric stapler. The top of the distal housing 110 and the top of the proximal housing 120 are hingedly connected by a rotational axis 130. Accordingly, distal housing 110 is rotatable about rotational axis 130 relative to proximal housing 120, thereby forming two states of distal housing 110 and proximal housing 120 being closed (as shown in fig. 3) or open (as shown in fig. 1), respectively, when housing assembly 100 is in a locked or unlocked state, respectively. When distal housing 110 and proximal housing 120 are closed, a cavity of housing assembly 100 is formed therein, which cavity may be used to house a power unit that may provide a power output to the implement of the electric stapler. Because electronic components such as a circuit board and a battery are contained in the power unit, sterilization methods such as ethylene oxide, high-temperature steam and the like cannot be adopted, and bacteria grow on the power unit which is reused. Considering that the power unit is a reusable component, the housing assembly 100 is designed as a sterile protective housing such that when the distal housing 110 and the proximal housing 120 are in a closed state, the housing assembly 100 is locked to form a sterile barrier that acts to block bacteria on the power unit from being transferred out of the disposable housing assembly 100, while also avoiding contact of contaminants such as blood during a surgical procedure with the power unit that is to be reused. In one embodiment, the material of the housing assembly 100 is a rigid plastic, disposable, convenient to process and ensures the strength of the housing assembly 100. In one embodiment, the material of housing assembly 100 is transparent to facilitate viewing of a display screen of the power unit inside housing assembly 100 to display the operation of the stapler to an operator.

As shown in fig. 1 to 3, the bottom snap assembly 300 includes a snap receiving groove 310, a snap elastic piece 320, and an unlocking button 330. The snap receiving groove 310 is provided at the bottom of the distal housing 110, the snap elastic piece 320 is provided at the bottom of the proximal housing 120, and the unlocking button 330 is provided at the bottom of the snap elastic piece 320. When the distal housing 110 and the proximal housing 120 are closed, the snap elastic pieces 320 can be inserted into the snap receiving grooves 310 and snapped with the snap receiving grooves 310 only by pushing force to lock the housing assembly 100 as shown in fig. 3. When the unlocking button 330 is pressed in the top direction, the snap elastic piece 320 is disengaged from the snap receiving groove 310, and the housing assembly 100 is unlocked as shown in fig. 2. It should be noted that the housing assembly may be unlocked without providing an unlocking button, specifically, when the snap elastic piece is pressed in the top direction, the snap elastic piece is released from the snap receiving groove, and the distal housing and the proximal housing are unlocked. The bottom clip assembly 300 has a certain holding force after the housing assembly 100 is locked, so that it is necessary to overcome a great resistance (the operator intentionally breaks off with force) to open the housing assembly 100. The bottom clasp assembly 300 according to an embodiment of the present disclosure may achieve a tight closing function of the distal housing 110 and the proximal housing 120. In this embodiment, the unlocking button 330 and the snap elastic piece 320 are provided 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 turning the proximal housing 120 is more straightforward.

Simple locking and unlocking operations may be achieved by the housing assembly 100 of the disclosed embodiments. In one aspect, the locking operation of the housing assembly 100 is simple, the distal housing 110 and the proximal housing 120 are directly closed, so that the snap elastic piece 320 is inserted into the snap receiving groove 310 and is clamped with the snap receiving groove 310, and thus the locking of the housing assembly 100 can be completed, and the closing and locking operations can be completed simultaneously through one action without missing the locking step. On the other hand, the unlocking operation of the housing assembly 100 is simple, the operator only needs to hold the distal housing 110 with one hand and press the unlocking button 330 at the bottom of the proximal housing 120 with one finger with the other hand, so that the latch elastic piece 320 is disengaged from the latch receiving slot 310, and the housing assembly 100 can be unlocked, and at this time, the action of opening the housing assembly 100 can be completed by pulling the distal housing 110 and the proximal housing 120 with a smaller force.

Fig. 4 is a schematic view of the bottom of a proximal housing according to an embodiment of the present disclosure, and fig. 5 is a schematic view of the bottom of a distal housing according to an embodiment of the present disclosure. In one embodiment, referring to fig. 1, 4 and 5, the snap receiving groove 310 comprises an opening 132 facing in the direction of the proximal housing 120, the bottom edge of the opening 132 being provided with a first snap rib 3124 protruding in the top direction. The bottom of the snap elastic piece 320 is provided with a second snap rib 3242 protruding in the bottom direction. When the distal housing 110 and the proximal housing 120 are closed, the snap elastic piece 320 is inserted into the snap receiving groove 310 and snapped into the snap receiving groove 310, and the second snap bead 3242 abuts the first snap bead 3124, thereby better locking the housing assembly 100 at the bottom. In one embodiment, when it is desired to lock the housing assembly 100, an operator applies an external force to perform a closing operation on the distal housing 110 and the proximal housing 120, at which time the second snap bead 3242 provided on the proximal housing 120 is first brought into contact with the first snap bead 3124 provided on the distal housing 110, and then the second snap bead 3242 is pressed against the proximal side of the first snap bead 3124 to move in the top direction under the continuous action of the external force, so that after the bottom of the second snap bead 3242 passes over the top of the first snap bead 3124, the second snap bead 3242 may abut against the distal side of the first snap bead 3124, whereby the housing assembly 100 is locked, as shown in fig. 3. When it is desired to unlock the housing assembly 100, the operator presses the unlock button 330 in a top direction, at which time the bottom of the second catch bar 3242 moves in a top direction against the distal side of the first catch bar 3124 such that when the bottom of the second catch bar 3242 passes over the top of the first catch bar 3124, the distal housing 110 rotates away from the proximal housing 120, the second catch bar 3242 no longer contacts the first catch bar 3124, at which time one of the distal housing 110 and the proximal housing 120 may be pulled such that the housing assembly 100 is unlocked. The bottom clip assembly 300 according to the embodiments of the present disclosure enables easy operation of locking and unlocking the housing assembly 100, and when the housing assembly 100 needs to be locked, the locking of the housing assembly 100 can be completed by only applying an external force to make the second clip rib 3242 abut the first clip rib 3124 and pass over the first clip rib 3124 under the action of the external force. When it is desired to unlock the housing assembly 100, the action of opening the housing assembly 100 can be completed by simply holding the distal housing 110 in one hand, pressing the unlocking button 330 to the bottom of the proximal housing 120 in one hand so that the second catch bar 3242 abuts the first catch bar 3124 and passes over the first catch bar 3124 under movement of the unlocking button 330, and pulling the distal housing 110 and the proximal housing 120 in both hands. Thus, the locking structure formed by the bottom buckle assembly 300 is stable and reliable, and the operation is simple and convenient. In this embodiment, "top direction" refers to a direction toward or approximately toward the region a, and "bottom direction" refers to a direction toward or approximately toward the region B. In other embodiments, it is understood that "top" refers to one end of the first housing that is rotatably coupled to the second housing and "bottom" refers to the other end of the first housing and the second housing opposite the "top".

With continued reference to fig. 3 and 4, in one embodiment, the snap-fit elastic tab 320 includes a first elastic tab 322 and a second elastic tab 324 disposed at a bottom of the first elastic tab 322, a distal end of the first elastic tab 322 being fixedly connected to a distal end of the second elastic tab 324 and forming an included angle 326. When an operator applies an external force to perform a closing operation on the distal housing 110 and the proximal housing 120, the angle of the included angle 326 decreases during the movement of the second snap bead 3242 against the proximal side of the first snap bead 3124 toward the top of the first snap bead 3124 under the force of the external force to allow the bottom of the second snap bead 3242 to pass over the top of the first snap bead 3124. And after the bottom of the second snap bead 3242 passes over the top of the first snap bead 3124, the angle of the included angle 326 returns to an initial value, at which point the second snap bead 3242 abuts the distal side of the first snap bead 3124 and the housing assembly 100 is locked, as shown in fig. 3. When the housing assembly 100 is locked and a large external force (force pulling the distal and proximal housings apart) is applied to the housing assembly 100 in an attempt to open the housing assembly 100, the angle of the included angle 326 increases, at which point the abutment force of the second snap bead 3242 with the distal side of the first snap bead 3124 increases. Thus, the housing assembly 100 according to the embodiment of the present disclosure is locked reliably, and without an unlocking action, a normal external force pulls the housing assembly 100, instead making the locking of the housing assembly 100 more secure.

Referring to fig. 1 and 3, the middle region of the housing assembly 100 further includes a middle snap assembly 200, and the middle snap assembly 200 includes a snap tab 210 and a snap region 220 corresponding to the snap tab 210. The middle region is the region between the top a and bottom B, such as the location of the middle clasp assembly 200 shown in fig. 1. The snap tab 210 is disposed on the distal housing 110, and a groove 212 is disposed on the snap tab 210, wherein the groove comprises a through hole. In one embodiment, the middle position of the snap tab 210 is provided with a groove 212 to facilitate better snap-engagement of the housing assembly 100. The snap-fit area 220 is arranged on the proximal housing 120, and the snap-fit area 220 is provided with a protrusion 222, the protrusion 222 being adapted to the recess 212. In one embodiment, the snap tabs 210 are provided on the proximal housing 120 and the snap regions 220 are provided on the distal housing 110, as desired. When distal housing 110 and proximal housing 120 are closed and protrusions 222 are nested in grooves 212, distal housing 110 forms a barrier with proximal housing 120 (as shown in fig. 3) such that the power unit is retained within the cavity, and when protrusions 222 are disengaged from grooves 212, distal housing 110 is unblocked from proximal housing 120 (as shown in fig. 1). It should be noted that "blocking" herein means that when the protrusion is embedded in the groove, the distal housing and the proximal housing are restricted by the middle snap assembly 200, so that the distal housing or the proximal housing cannot move relative to each other. The middle snap assembly 200 has a certain retention force after the distal housing 110 and the proximal housing 120 form a block, so that a certain resistance force needs to be overcome before the distal housing 110 and the proximal housing 120 are unblocked. The middle clasp assembly 200 according to embodiments of the present disclosure provides a precise guiding action during closure of the distal housing 110 and the proximal housing 120, while providing additional restraining action to the housing assembly. The number of middle snap assemblies 200 may be set according to actual needs, in one embodiment, the number of middle snap assemblies 200 is two, specifically, one snap tab 210 is provided on each side of the distal housing 110, and one snap area 220 is provided on each side of the proximal housing 120. The snap tabs 210 are in one-to-one correspondence with the snap regions 220. The housing assembly 100 is better locked when the distal housing 110 and the proximal housing 120 are closed and the protrusions 222 on both sides are respectively inserted into the corresponding grooves 212.

Fig. 6 is another schematic view of the housing assembly 100 in an open state to illustrate the spring plunger 122, according to an embodiment of the present disclosure. Fig. 7 is another schematic view of the housing assembly 100 in an open state according to an embodiment of the present disclosure. Fig. 8A is a cross-sectional view of the housing assembly 100 in a closed state according to an embodiment of the present disclosure. Fig. 8B is a bottom partial enlarged view of the housing assembly 100 of fig. 8A to illustrate the spring plunger 122. In one embodiment, at least one spring plunger 122 is disposed on the interface of one of the proximal housing 120 or the distal housing 110, each of the at least one spring plunger 122 including a spring 1222 and a stud 1224 coupled to the spring 1222, fig. 6 illustrates the disposition of the spring plunger 122 on the interface of the proximal housing 120. Preferably, a plurality of spring plungers 122 may be provided at the bottom of the proximal housing 120, as shown in fig. 6. Wherein when distal housing 110 and proximal housing 120 are closed, spring 1222 is in a compressed state and applies a force to plunger 1224 to urge plunger 1224 against opposing abutment surface 112 (as shown in fig. 7), and in particular, after spring plunger 122 and opposing abutment surface 112 are in contact, plunger 1224 is deflected back into plunger bore 124 in which spring plunger 122 is positioned by the abutment force of opposing abutment surface 112, such that spring plunger 122 fully enters plunger bore 124 when distal housing 110 and proximal housing 120 are closed, as shown in fig. 8B. When the operator unlocks the housing assembly 100, disengages the snap tabs 320 from the snap receiving slots 310, and opens the middle snap assembly 200, the protrusion 222 disengages from the groove 212, the force exerted by the spring 1222 against the stud 1224 pushes against the opposite abutment surface 112, causing the distal housing 110 to rotate a small distance to assist in opening the distal housing 110 and the proximal housing 120, after which the distal housing 110 and the proximal housing 120 are fully opened again under the force of the operator. In a preferred embodiment, the proximal housing 120 is provided with a pair of spring plungers 122, the pair of spring plungers 122 being located on either side of the proximal housing 120. Such a design facilitates the housing assembly 100 to be opened better and faster after unlocking. By providing the spring plunger 122 in the proximal housing 120, the removal of the housing assembly 100 is made more labor efficient and easy, and the opening of the housing assembly 100 can be accomplished automatically without the operator having to pull the proximal housing 120 and the distal housing 110 and overcome the frictional resistance of the housing assembly when mated.

The present disclosure also relates to a surgical instrument comprising a 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 receive the power unit, as described above.

The locking and unlocking operations of the shell assembly can be simply and conveniently realized through the shell assembly of the embodiment of the disclosure. On the one hand, the unlocking operation of the shell assembly is simple, an operator only needs to hold the distal shell by one hand and press an unlocking button at the bottom of the proximal shell by one hand, so that the locking of the shell assembly is completed by releasing the clamping connection between the clamping elastic piece and the clamping receiving groove, and at the moment, the action of opening the shell assembly can be completed by pulling the distal shell and the proximal shell with smaller force. According to some embodiments of the present disclosure, by providing a spring plunger at a proximal housing, the housing assembly is made more labor-saving and simpler to open, and without pulling the proximal housing and the distal housing, the two side housings in the housing assembly can be automatically separated and the preliminary action of opening the housing assembly can be completed.

Although examples of the present disclosure are provided in the foregoing description, modifications and changes may be made to these examples by those skilled in the art without departing from the scope and spirit of the present disclosure. For example, it should be understood that features of embodiments herein may be applicable to other embodiments described herein. Accordingly, the description is intended to be illustrative, and not restrictive. The disclosure is defined by the appended claims, and all changes to the disclosure that fall within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (13)

1. A housing assembly, the housing assembly comprising:

A first housing, and

A second housing, the top of the first housing being rotatably connected to the top of the second housing such that a cavity is formed therein when the first housing and the second housing are closed, an

Wherein, the bottom of shell subassembly is provided with bottom buckle subassembly, bottom buckle subassembly includes:

A buckle receiving groove provided at the bottom of the first housing, and

The clamping elastic piece is arranged at the bottom of the second shell;

Wherein when the first and second housings are closed, the snap-fit elastic piece is inserted into and snapped into the snap-fit receiving groove to lock the housing assembly;

When the buckle elastic piece is pressed towards the top direction, the buckle elastic piece is in clamping connection with the buckle receiving groove, and the first shell and the second shell are unlocked.

2. The housing assembly of claim 1, wherein the snap spring tab comprises an unlock button disposed at a bottom of the snap spring tab.

3. The housing assembly of claim 2 wherein the housing assembly comprises a housing,

The buckle receiving groove comprises an opening facing the direction of the second shell, and a first buckle rib protruding towards the top direction is arranged at the bottom edge of the opening;

the bottom of the elastic buckle piece is provided with a second buckle rib protruding towards the bottom direction.

4. The housing assembly of claim 3 wherein the housing assembly comprises a housing,

When the first housing and the second housing are closed, the second snap bead is in contact with the first snap bead and is urged toward the top by an external force against the second of the first snap bead such that the second snap bead abuts against the first of the first snap beads after the bottom of the second snap bead passes over the top of the first snap bead to lock the first housing and the second housing, and

When the unlocking button is pressed towards the top direction until the bottom of the second buckling rib passes over the top of the first buckling rib, and the first shell is far away from the second shell, the second buckling rib is not contacted with the first buckling rib any more, so that the first shell and the second shell are unlocked.

5. The housing assembly of claim 4 wherein the housing assembly comprises a housing,

The buckle elastic piece comprises 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.

6. The housing assembly of claim 5, wherein the included angle of the snap-fit resilient tab is configured to:

Before the first shell and the second shell are closed, the included angle is a first angle;

The second snap bead moving against the second of the first snap bead toward the top of the first snap bead under the influence of an external force, the included angle decreasing from the first angle to a second angle to allow the bottom of the second snap bead to pass over the top of the first snap bead, and

After the bottom of the second buckling rib passes over the top of the first buckling rib, the included angle is restored to the first angle, and the first shell and the second shell are locked.

7. The housing assembly of claim 6 wherein the housing assembly comprises a housing,

The included angle increases 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.

8. The housing assembly of claim 1 wherein the housing assembly comprises a housing,

The intermediate region of the housing assembly further includes a middle snap assembly such that the housing assembly is restrained in the intermediate region when the first and second housings are closed.

9. The housing assembly of claim 8 wherein the housing assembly comprises a housing,

The middle buckle component comprises a buckle sheet arranged on one of the first shell and the second shell and a buckle area arranged on the other of the first shell and the second shell, the buckle sheet is provided with a groove, the buckle area is provided with a protrusion matched with the groove,

When the first housing and the second housing are closed and the projection is inserted into the recess, the first housing forms a barrier with the second housing, and

When the projection is disengaged from the groove and the snap-fit elastic piece is disengaged from the snap-fit receiving groove, the first housing is unblocked from the second housing.

10. The housing assembly of claim 1 wherein the housing assembly comprises a housing,

At least one spring plunger is arranged on the abutting surface of one of the second shell or the first shell, each spring plunger in the at least one spring plunger comprises a spring and a column head connected with the spring,

Wherein when the first and second housings are closed, the spring is in a compressed state and exerts a force on the stud to urge the stud against the opposing abutment surface, an

When the elastic buckle piece is in clamping connection with the buckle receiving groove, the force exerted by the spring on the column head pushes the opposite-side abutting surface to assist in opening the first shell and the second shell.

11. The housing assembly of claim 10, wherein a pair of spring plungers are disposed on the interface of one of the second housing or the first housing, the pair of spring plungers being located on either side of one of the second housing or the first housing, respectively.

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

13. A surgical instrument comprising a power unit, comprising the housing assembly of any one of claims 1-12, the cavity configured to receive the power unit.