CN117752388A - Room space punching device - Google Patents

Abstract

The invention provides a room partition punching device, which relates to the technical field of medical appliances, and comprises: a non-destructive tip assembly, a spearhead assembly, and a cutter assembly; the cutter assembly is sleeved on the nondestructive tip assembly; the spearhead assembly is movably coupled to the non-destructive tip assembly and/or the cutter assembly. When carrying out room interval trompil, puncture the punching through harmless pointed end subassembly at the room interval to realize accurate location, anchor the room interval by spearhead subassembly again, and then can ensure that cutter assembly accurate cutting room interval is in order to form the smooth trompil of tangent plane, can avoid the room to separate the hole process and produce piece and drop, and can not lead to the fact other myocardial tissue damage because of the apparatus is not hard up.

Description

Room space punching device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a room septum perforating device.

Background

Later stages of pulmonary hypertension often require treatment by an atrial septum ostomy because the right heart system has very high resistance and little pulmonary blood volume, the right heart system cannot shunt right to left, and perforation can relieve pulmonary hypertension and left heart failure. The main means of the anterior atrial septum ostomy include: balloon inflation atrial septum perforation, stent implant perforation, mechanical cutting, etc., however, the above-described ostomy methods have various technical problems. The balloon dilation atrial septum punch operation often causes tissue rebound after balloon withdrawal, which results in reduced openings and even closure; stent-graft punching is performed because the stent is an implant, endothelialization occurs, the opening of the atrial septum is easily covered and blocked by an endothelial membrane, and the occurrence probability of a channel embolism and thrombosis after the stent is implanted is correspondingly increased. The presence of the stent makes it more difficult to re-perform the ostomy after occlusion has occurred. Mechanical cutting and hole forming can lead to cut tissues falling off and embolizing, and loosening of the grabbing device during mechanical cutting can also lead to damage of other myocardial tissues. Thus, the prior atrial septal ostomy has the technical problems of difficult persistence of the atrial septal opening, easy embolism formation, poor stability of the instrument and the like.

Disclosure of Invention

The invention aims to provide a room partition punching device which is used for solving the technical problems that in the prior art, embolism is easy to form in room partition punching and the stability of instruments is poor.

In a first aspect, the present invention provides a room partition punching device, including: a non-destructive tip assembly, a spearhead assembly, and a cutter assembly;

the cutter assembly is sleeved on the nondestructive tip assembly;

the spearhead assembly is movably coupled to the non-destructive tip assembly and/or the cutter assembly.

With reference to the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the non-destructive tip assembly includes a tip, a proximal end of the tip is provided with a receiving groove, and the spearhead assembly is detachably inserted into the receiving groove.

With reference to the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the non-destructive tip assembly comprises a head having a tip portion, the tip portion decreasing in radial dimension from a proximal end to a distal end;

the outer surface of the tip is provided with a spiral groove.

With reference to the first possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the non-destructive tip assembly further includes: a guidewire tube and a knob;

the distal end of the guide wire tube is connected with the end head, and the proximal end of the guide wire tube is connected with the knob;

the spearhead assembly is sleeved with the guide wire tube, and the cutter assembly is sleeved with the spearhead assembly.

With reference to the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the non-destructive tip assembly further includes: a sleeve and a stop pin;

the shaft sleeve is connected with the wire guide tube or the knob, the stop pin is connected with the shaft sleeve, and the stop pin is detachably matched with the cutter assembly.

With reference to the first possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the proximal end of the tip is provided with an engagement portion, and the engagement portion is detachably mated with the cutter assembly.

With reference to the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the spearhead assembly includes: spearhead, spearhead tube and slider;

the spear head is attached to the distal end of the spear tube, the slider is attached to the proximal end of the spear tube, and the slider is a sliding fit to the cutter assembly in the axial direction of the spear tube.

With reference to the sixth possible implementation manner of the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the spear assembly is provided with a gas exhaust channel extending from the spear to the slider via the spear tube, and a gas exhaust is provided at the slider.

With reference to the sixth possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the non-destructive tip assembly passes through the sliding block, the spear pipe and the spear head, and a seal is provided between the sliding block and the non-destructive tip assembly.

With reference to the sixth possible implementation manner of the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein the spear head has a plurality of sharp edges spaced along a circumference of the spear tube, the sharp edges having barbs that radially outwardly open along the spear tube;

the barb has a guide portion that slopes from proximal to distal toward and toward the spear axis, and a stop portion that faces proximally.

With reference to the first aspect, the present invention provides a tenth possible implementation manner of the first aspect, wherein the cutter assembly includes: the cutter head, the cutter tube and the operating handle;

the cutter head is connected to the distal end of the cutter tube, and the cutter tube is axially and slidably matched with the operating handle along the cutter tube.

With reference to the tenth possible implementation manner of the first aspect, the present invention provides an eleventh possible implementation manner of the first aspect, wherein the operation handle includes: the handle comprises a handle shell, a sliding sleeve, a first elastic piece and a locking piece;

the cutter tube is connected with the sliding sleeve, the sliding sleeve is in sliding fit with the handle shell along the axial direction of the cutter tube, and the handle shell is provided with a limiting part opposite to the sliding sleeve;

the first elastic piece is arranged between the handle shell and the sliding sleeve, and has a trend of driving the sliding sleeve to slide distally relative to the handle shell so as to enable the sliding sleeve to abut against the limiting part;

the locking piece is movably connected to the handle shell and used for locking the sliding sleeve so that the sliding sleeve is located at the proximal end position of the sliding stroke.

With reference to the tenth possible implementation manner of the first aspect, the present invention provides a twelfth possible implementation manner of the first aspect, wherein the cutter head is provided with a plurality of cutting edges circumferentially spaced along the cutter tube, and the cutting edges have tips extending distally.

The embodiment of the invention has the following beneficial effects: the cutter assembly is sleeved on the nondestructive tip assembly, the spearhead assembly is movably connected with the nondestructive tip assembly and/or the cutter assembly, and puncture and punching are carried out on the room septum through the nondestructive tip assembly, so that accurate positioning is achieved, the spearhead assembly anchors the room septum, further, the cutter assembly can be ensured to accurately cut the room septum to form a cut-face-smooth opening, chips and falling off in the process of separating holes in the room can be avoided, and other myocardial tissue injuries caused by looseness of an instrument are avoided.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a cross-sectional view of a room partition perforating device provided by an embodiment of the invention;

FIG. 2 is a schematic diagram of a non-destructive tip assembly of a room septum perforating device provided in an embodiment of the present invention;

FIG. 3 is a schematic view of an end of a room septum perforating device according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the engagement of the retaining pin and the handle housing of the room septum perforating device provided by the embodiments of the present invention;

FIG. 5 is a schematic view of a spearhead assembly of a room distance perforating device provided in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a spearhead assembly of a room separator perforating device provided in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a spearhead of a room distance perforating device provided by an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a cutter assembly of a room septum perforating device provided in an embodiment of the present invention;

FIG. 9 is an enlarged schematic view of the position A of FIG. 8;

FIG. 10 is a schematic view of a cutter head of a room partition punching device according to an embodiment of the present invention;

FIG. 11 is a schematic view of a tail end handle of a room septum perforating device provided by an embodiment of the present invention;

FIG. 12 is a schematic diagram of a room partition punching device of the room partition punching device according to an embodiment of the present invention when the room partition punching device acts on a room partition position;

fig. 13 is a schematic view of a room separator according to an embodiment of the present invention when a room separator is perforated.

Icon: 100-a non-destructive tip assembly; 110-end; 111-a receiving groove; 112-tip; 113-helical grooves; 114-a junction; 120-a guidewire tube; 130-a knob; 140-shaft sleeve; 150-a stop pin; 200-spearhead assembly; 201-an exhaust passage; 210-spearhead; 211-sharp; 212-barbs; 213-a first lumen; 2121-guide; 2122-backstop; 220-spear tube; 221-a second lumen; 230-a slider; 231-a third lumen; 232-piping branches; 233-push-press portion; 240-seals; 241-sealing ring; 242-check ring; 300-a cutter assembly; 310-cutter head; 311-blade; 320-knife tube; 330-operating the handle; 3301-a limit part; 3302-axial chute; 331-a handle housing; 3311—a head end handle; 3312—middle handle; 3313—a tail end handle; 332-sliding sleeve; 333-a first elastic member; 334-locking member; 400-a guide wire; 500-heart; 510-atrial septum.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the term "proximal" is used herein to refer to the end closer to the source of operating power or the operator, and the term "distal" is used to refer to the end farther from the source of operating power or the operator. The terms "first," "second," and "third" are used merely to describe name differences and are not to be construed as indicating or implying relative importance. Physical quantities in the formulas, unless otherwise noted, are understood to be basic quantities of basic units of the international system of units, or derived quantities derived from the basic quantities by mathematical operations such as multiplication, division, differentiation, or integration.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 12 and 13, a room partition punching device provided in an embodiment of the present invention includes: a non-destructive tip assembly 100, a spearhead assembly 200, and a cutter assembly 300; the cutter assembly 300 is sleeved on the nondestructive tip assembly 100; the spearhead assembly 200 is movably coupled to the non-destructive tip assembly 100 and/or the cutter assembly 300.

Specifically, the spearhead assembly 200 is movably coupled to the non-destructive tip assembly 100, or the spearhead assembly 200 is movably coupled to the cutter assembly 300, and the spearhead assembly 200 may be movably coupled to the non-destructive tip assembly 100 and the cutter assembly 300. When the atrial septum 510 is perforated, firstly, the atrial septum perforation device is implanted to the atrial septum 510 to be perforated in the heart 500 along the guide wire 400 through the femoral vein, the iliac vein and the vena cava, and then the nondestructive tip assembly 100 is operated to puncture the atrial septum 510 along the guide wire 400, so that the position of the perforation position is realized, and other myocardial tissues are prevented from being damaged due to loosening of the atrial septum perforation device. The spearhead assembly 200 is then actuated to pierce the atrial septum 510 and anchor the atrial septum 510, thereby preventing the atrial septum 510 from being distally displaced relative to the cutter assembly 300. After the room space 510 is anchored by the spearhead assembly 200, the cutter assembly 300 is operated to cut and open the room space 510, and the room space 510 is kept stable in the process, so that the incision generated by the cutter assembly 300 is smoother, has no scraps and falls off, and has the technical advantages of easy operation, safety and reliability.

As shown in fig. 1, 2, 3 and 13, in an embodiment of the present invention, the non-destructive tip assembly 100 includes a tip 110, a receiving groove 111 is provided at a proximal end of the tip 110, and a spearhead assembly 200 is detachably inserted into the receiving groove 111. When the spearhead assembly 200 is inserted into the receiving slot 111, the non-destructive tip assembly 100 forms a combined structure with the distal end of the spearhead assembly 200, which is approximately unitary in shape and has a flat circumferential outer surface.

In an alternative embodiment, the spearhead assembly 200 may be inserted into the receiving slot 111 to pass through the atrial septum 510 with the atraumatic tip assembly 100, and then the spearhead assembly 200 may be pulled back to anchor the tissue radially contracted from the opening to the atrial septum 510.

The embodiment focusing on the present embodiment adopts a mode of disengaging the non-destructive tip assembly 100 from the spearhead assembly 200, operating the non-destructive tip assembly 100 to radially position through the atrial septum 510, and then operating the spearhead assembly 200 to pierce the atrial septum 510 to anchor the atrial septum 510, so that the reliability of hooking back the spearhead assembly 200 and anchoring the atrial septum 510 can be ensured on the basis of accurate positioning.

Further, the atraumatic tip assembly 100 includes a head 110 having a tip 112, the tip 112 decreasing in radial dimension from the proximal end to the distal end; the outer surface of the tip 112 is provided with a spiral groove 113. The atraumatic tip assembly 100 not only can push and pierce the septum 510 axially along the guidewire 400, but also can drill into the septum 510 by driving the tip 110 to rotate around the septum 510, thereby avoiding debris generated during the process of piercing the septum 510 and reducing the chance of embolism.

As shown in fig. 1, 2 and 13, the non-destructive tip assembly 100 further comprises: a guidewire tube 120 and a knob 130; the distal end of the guidewire tube 120 is connected to the tip 110, and the proximal end of the guidewire tube 120 is connected to the knob 130; the spearhead assembly 200 houses the guidewire tube 120 and the cutter assembly 300 houses the spearhead assembly 200. The proximal end of the guide wire tube 120 passes through the cutter assembly 300 and is exposed, the knob 130 is connected to the proximal end of the guide wire tube 120, the knob 130 is rotated to drive the guide wire tube 120 and the tip 110 to rotate, and when the knob 130 is pushed distally and rotated, the tip 110 abuts against the atrial septum 510 and drills the atrial septum 510, so that the tip 110 can smoothly pierce the atrial septum 510.

Further, the non-destructive tip assembly 100 further comprises: a sleeve 140 and a stop pin 150; the sleeve 140 is coupled to the guidewire tube 120 or the knob 130, the stop pin 150 is coupled to the sleeve 140, and the stop pin 150 is removably coupled to the cutter assembly 300.

In an alternative embodiment, the retaining pin 150 may be movably coupled to the hub 140 such that switching of engagement and disengagement of the retaining pin 150 relative to the cutter assembly 300 is accomplished by manipulating the expansion and contraction of the retaining pin 150 in the radial direction of the hub 140.

As shown in fig. 1, 2, 4, 11 and 13, the tail end handle 3313 of the cutter assembly 300 is provided with an axial chute 3302 therein, and in a state in which the stopper pin 150 is engaged with the cutter assembly 300, the stopper pin 150 is slidably engaged with the axial chute 3302, at which time the non-destructive tip assembly 100 is circumferentially fixed with respect to the cutter assembly 300. When knob 130 is advanced distally until stop pin 150 slides out of axial chute 3302, non-destructive tip assembly 100 may be rotated relative to cutter assembly 300, thereby driving tip 110 into and through atrial septum 510.

As shown in fig. 3, the proximal end of the tip 110 is provided with an engagement portion 114, the engagement portion 114 being removably engaged with the cutter assembly 300.

Specifically, the engaging portion 114 may be configured as a notch adapted to the cutter head 310 of the cutter assembly 300, and in a state that the tip 110 is combined with the cutter head 310, the plurality of cutting edges 311 of the cutter head 310 are inserted into the plurality of notches in a one-to-one correspondence manner, so as to ensure that the circumferential outer surface of the combination of the tip 110 and the cutter head 310 is relatively smooth, and the tip 110 is circumferentially fixed with respect to the cutter head 310.

As shown in fig. 1, 2, 5, 6, 8, and 13, the spearhead assembly 200 includes: spearhead 210, spearhead tube 220 and slider 230; the spear head 210 is attached to the distal end of the spear tube 220, the slider 230 is attached to the proximal end of the spear tube 220, and the slider 230 is a sliding fit to the cutter assembly 300 along the axial direction of the spear tube 220.

The middle handle 3312 of the cutter assembly 300 is provided with an axially extending through slot, through which the slider 230 is exposed and can slide back and forth along the through slot. Distal pushing of the slider 230 may drive the spear tube 220 and spear head 210 to slide along the guidewire tube 120, and the spear head 210 may then pierce and anchor to the atrial septum 510.

Further, the spearhead assembly 200 is provided with a vent passage 201 extending from the spearhead 210 through the spearhead tube 220 to the ram 230 and providing a vent at the ram 230.

Wherein the spear head 210 has a first lumen 213, the spear tube 220 has a second lumen 221, the slider 230 is provided with a third lumen 231, the spear head 210 is inserted into and fixed to the distal end of the second lumen 221, and the proximal end of the spear tube 220 is inserted into and fixed to the third lumen 231. In addition, the sliding block 230 is further provided with a pipe branch 232 extending to the outside of the middle handle 3312 and opened, and the first lumen 213, the second lumen 221, the third lumen 231 and the pipe branch 232 form the exhaust passage 201 together, so that exhaust can be performed when the lossless tip assembly 100 and the spearhead assembly 200 are axially pushed and pulled, thereby ensuring the balance of internal and external air pressures, and further enabling the lossless tip assembly 100 and the spearhead assembly 200 to slide smoothly.

It should be noted that, the portion of the slider 230 exposed outside the middle handle 3312 is provided with a pushing portion 233 facing the proximal end, the opening of the pipe branch 232 avoids the pushing portion 233, and the opening direction of the pipe branch 232 preferably deviates from the pushing portion 233, so as to avoid blocking the opening of the pipe branch 232 caused by operating the pushing portion 233.

As shown in fig. 1 and 6, the non-destructive tip assembly 100 passes through the slider 230, spear 220 and spear 210, with a seal 240 between the slider 230 and the non-destructive tip assembly 100.

Specifically, the seal 240 includes: the seal ring 241 and the collar 242, the seal ring 241 is axially constrained within the slider 230 by the collar 242, and the guidewire tube 120 passes through the collar 242, the seal ring 241, the third lumen 231, the second lumen 221, and the third lumen 231, thereby allowing the atraumatic tip assembly 100 and the spearhead assembly 200 to slide axially relative to one another.

As shown in fig. 1, 5, 6, 7 and 13, the spear 210 has a plurality of sharp edges 211 spaced apart along the circumference of the spear tube 220, the sharp edges 211 having barbs 212 that flare radially outwardly of the spear tube 220; the barb 212 has a guide 2121 that slopes proximally to a distal end toward the axis of the spear 220, and a proximally directed stop 2122.

When the spearhead 210 is inserted into the receiving slot 111, the sharp 211 and barb 212 may be obscured by the tip 110. The distal end of sharp 211 is configured as a sharp to successfully pierce septum 510 and when septum 510 is pierced, the spearhead assembly 200 is pulled back proximally and the stop 2122 will abut the surface of septum 510 facing away from cutter assembly 300, thereby allowing for anchoring of septum 510 and thus for smooth cutting of the opening by cutter assembly 300. Moreover, the septum 510 remains stable during the aperturing process, avoiding the generation of debris and tissue loss.

As shown in fig. 1, 8, 9 and 13, the cutter assembly 300 includes: a cutter head 310, a cutter tube 320, and an operating handle 330; the cutter head 310 is connected to the distal end of the cutter tube 320, and the cutter tube 320 is axially slidably fitted to the operating handle 330. Wherein, the operating handle 330 may comprise a head end handle 3311, a middle handle 3312 and a tail end handle 3313 connected in sequence, the sleeve 140 is slidingly matched with the tail end handle 3313, and the knife tube 320 is slidingly matched with the head end handle 3311.

In an alternative embodiment, the handle 330 may be manually operated to drive the blade tube 320 and the blade 310 distally, thereby effecting cutting of the septum 510.

In the present embodiment, the operation handle 330 includes: a handle housing 331, a sliding sleeve 332, a first elastic member 333, and a locking member 334; the knife tube 320 is connected with the sliding sleeve 332, the sliding sleeve 332 is in sliding fit with the handle shell 331 along the axial direction of the knife tube 320, and the handle shell 331 is provided with a limiting part 3301 opposite to the sliding sleeve 332; the first elastic member 333 is installed between the handle housing 331 and the sliding sleeve 332, and the first elastic member 333 has a tendency to drive the sliding sleeve 332 to slide distally relative to the handle housing 331 so that the sliding sleeve 332 abuts the stopper 3301; the locking member 334 is movably connected to the handle housing 331, and the locking member 334 is used to lock the sliding sleeve 332 such that the sliding sleeve 332 is at a proximal position of the sliding stroke. When the room space 510 is anchored, the operation locking member 334 unlocks the sliding sleeve 332, and the first elastic member 333 drives the sliding sleeve 332 to drive the cutter tube 320 and the cutter head 310 to slide distally, so that the room space 510 is cut quickly, and compared with the manual operation, the room space 510 is better in consistency, better and quicker in cutting, and smoother in incision.

As shown in fig. 10, the cutter head 310 is provided with a plurality of blades 311 circumferentially spaced along the cutter tube 320, the blades 311 having tips extending distally. The cut circular tissue can enter the hollow area of the cutter head 310, so that the cut circular tissue cannot fall off and embolism is avoided. Specifically, the blades 311 are sharpened on both sides in the circumferential direction, and the tips of the plurality of blades 311 penetrate and cut. In the preferred embodiment, two blades 311 are provided, and the two blades 311 are circumferentially spaced along the cutter tube 320 and are centrally symmetrical with respect to the axis of the cutter tube 320, so that the formed incision is smoother.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (13)

1. A room septum perforating device, comprising: a non-destructive tip assembly (100), a spearhead assembly (200) and a cutter assembly (300);

the cutter assembly (300) is sleeved on the nondestructive tip assembly (100);

the spearhead assembly (200) is movably connected to the non-destructive tip assembly (100) and/or the cutter assembly (300).

2. The room septum perforating device of claim 1, characterized in that the non-destructive tip assembly (100) comprises a tip (110), the proximal end of the tip (110) is provided with a receiving groove (111), and the spearhead assembly (200) is removably inserted into the receiving groove (111).

3. The septal punch device of claim 1, wherein the atraumatic tip assembly (100) comprises a tip head (110) having a tip portion (112), the tip portion (112) decreasing in radial dimension from proximal to distal;

the outer surface of the tip part (112) is provided with a spiral groove (113).

4. A room septum perforating apparatus as defined in claim 2 or 3, wherein the non-destructive tip assembly (100) further comprises: a guidewire tube (120) and a knob (130);

the distal end of the guide wire tube (120) is connected with the end head (110), and the proximal end of the guide wire tube (120) is connected with the knob (130);

the spearhead assembly (200) is sleeved with the guide wire tube (120), and the cutter assembly (300) is sleeved with the spearhead assembly (200).

5. The atrial septum perforating device of claim 4, wherein the atraumatic tip assembly (100) further comprises: a sleeve (140) and a stop pin (150);

the shaft sleeve (140) is connected with the wire guide tube (120) or the knob (130), the stop pin (150) is connected with the shaft sleeve (140), and the stop pin (150) is detachably matched with the cutter assembly (300).

6. A room septum perforating device as defined in claim 2 or 3, wherein the proximal end of the tip (110) is provided with an engagement portion (114), the engagement portion (114) being removably mated with the cutter assembly (300).

7. The room divider perforating apparatus of claim 1, characterized in that the spearhead assembly (200) comprises: a spear head (210), a spear tube (220) and a slider (230);

the spear head (210) is connected to the distal end of the spear tube (220), the slider (230) is connected to the proximal end of the spear tube (220), and the slider (230) is a sliding fit to the cutter assembly (300) along the axial direction of the spear tube (220).

8. The room distance punching device according to claim 7, characterized in that the spear assembly (200) is provided with a vent channel (201) extending from the spear (210) through the spear tube (220) to the slide (230) and providing a vent at the slide (230).

9. The room distance perforating apparatus of claim 7, characterized in that the non-destructive tip assembly (100) is passed through the slider (230), the spear tube (220) and the spear head (210), a seal (240) being provided between the slider (230) and the non-destructive tip assembly (100).

10. The room distance perforating device of claim 7, characterized in that the spear head (210) has a plurality of sharp edges (211) spaced circumferentially of the spear tube (220), the sharp edges (211) having barbs (212) that flare radially outwardly of the spear tube (220);

the barb (212) has a guide (2121) that slopes proximally to a distal end toward an axis of the lance tube (220), and a proximally directed stop (2122).

11. The room divider of claim 1, wherein the cutter assembly (300) comprises: a cutter head (310), a cutter tube (320) and an operating handle (330);

the cutter head (310) is connected to the distal end of the cutter tube (320), and the cutter tube (320) is in sliding fit with the operating handle (330) along the axial direction of the cutter tube.

12. The room divider of claim 11, wherein the operating handle (330) comprises: a handle housing (331), a sliding sleeve (332), a first elastic member (333) and a locking member (334);

the cutter tube (320) is connected with the sliding sleeve (332), the sliding sleeve (332) is in sliding fit with the handle shell (331) along the axial direction of the cutter tube (320), and the handle shell (331) is provided with a limiting part (3301) opposite to the sliding sleeve (332);

the first elastic member (333) is installed between the handle housing (331) and the sliding sleeve (332), and the first elastic member (333) has a tendency to drive the sliding sleeve (332) to slide distally relative to the handle housing (331) so that the sliding sleeve (332) abuts against the stopper (3301);

the locking piece (334) is movably connected to the handle shell (331), and the locking piece (334) is used for locking the sliding sleeve (332) so that the sliding sleeve (332) is at a proximal end position of a sliding stroke.

13. The room distance punching device as claimed in claim 11, characterized in that the cutter head (310) is provided with a plurality of blades (311) arranged circumferentially at intervals along the cutter tube (320), the blades (311) having tips extending distally.