Intracranial puncture dilator

Abstract

The utility model relates to the field of medical instruments, in particular to an intracranial puncture dilator. Comprising a puncture cannula with two open ends and a puncture outfit which is arranged on the puncture cannula in a sleeving mode and detachably connected with the puncture cannula. A plurality of lock holes are formed in the near end of the puncture cannula in the axial direction of the puncture cannula. A plurality of through holes are formed in the side wall of the far end of the puncture outfit in the radial direction of the puncture outfit. A plurality of lock catches matched with the lock holes are arranged at the near end of the puncture outfit; the side wall of the puncture outfit is provided with the through hole for cerebral effusion drainage, and compared with a conventional puncture outfit provided with a through hole at the bottom, the side wall opening cannot influence the leading-in of the puncture outfit, and the through hole in the side wall is not easy to block in the leading-in process of the puncture outfit; the puncture cannula and the puncture outfit are integrally formed and can be assembled and disassembled through the lock hole and the lock catch, the operation is simple and easy to operate, the operation time is shortened to a certain extent, and the error rate is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an intracranial puncture dilator. Background Art

[0002] A dilator is a type of medical device that comes into contact with human body tissues during surgical operations to obtain a surgical field of view and surgical space. The requirements for dilators vary for different surgical sites. During brain surgery, since brain tissues are very soft and delicate, conventional brain dilators may cause brain tissue contusion due to compression or local cerebral ischemia. Therefore, the requirements for dilators in brain surgery are extremely high. In the prior art, there are already retraction and dilation devices applicable to brain tissues. For example, the Chinese patent document CN203042329U discloses a disposable brain surgery retractor. Although it can expose the surgical site and reduce brain tissue damage to a certain extent, the operation of this retractor is cumbersome, and a large number of parts increase the incidence of intraoperative accidents to a certain extent. Moreover, the holes at the bottom of this retractor are extremely easy to be blocked during the operation, thus unable to achieve its drainage effect.

[0003] Therefore, there is an urgent need for a dilator applicable to brain tissues, which is simple to operate and not easily blocked. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an intracranial puncture dilator for the deficiencies in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provide an intracranial puncture dilator, including: a puncture cannula with openings at both ends and a puncture device sleeved on the puncture cannula and detachably connected to the puncture cannula;

[0007] Wherein, a plurality of locking holes are axially formed in the proximal end of the puncture cannula along the axial direction of the puncture cannula;

[0008] A plurality of through holes are radially formed in the distal side wall of the puncture device along the radial direction of the puncture device; a plurality of locking buckles matching the locking holes are arranged at the proximal end of the puncture device.

[0009] Preferably, a guiding scale is arranged on the outer wall of the puncture cannula.

[0010] Preferably, both the puncture cannula and the puncture device are made of a transparent elastic material.

[0011] Preferably, a plurality of the through holes are uniformly arranged along the circumferential direction of the puncture device.

[0012] Preferably, the distal end of the puncture device is semi-ellipsoidal.

[0013] Preferably, the puncture cannula includes: two first handles disposed at the proximal end of the puncture cannula and symmetrically arranged about the axis of the puncture cannula; a plurality of the locking holes are respectively formed at one end of the two first handles close to the puncture cannula.

[0014] At the proximal end of the puncture device, there are two second handles symmetrically arranged about the axis of the puncture device, and a plurality of the locking latches are respectively disposed at one end of the two second handles close to the puncture device.

[0015] Preferably, the puncture cannula includes: two first handles disposed at the proximal end of the puncture cannula and symmetrically arranged about the axis of the puncture cannula; a plurality of the locking holes are respectively formed in the middle of the two first handles.

[0016] At the proximal end of the puncture device, there are two second handles symmetrically arranged about the axis of the puncture device; the second handle includes: a fixed part and a movable part integrally formed with the fixed part; the locking latch is fixedly disposed at the distal end of the movable part.

[0017] Preferably, the puncture cannula includes: one first handle disposed at the proximal end of the puncture cannula; a plurality of the locking holes are all formed at one end of the first handle away from the puncture cannula.

[0018] At the proximal end of the puncture device, there is one second handle; the second handle includes: one fixed part and two movable parts symmetrically arranged about the fixed part; the locking latch is fixedly disposed at the distal end of the movable part.

[0019] The utility model adopts the above technical solutions, compared with the prior art, has the following technical effects:

[0020] The utility model opens a through hole on the side wall of the puncture device for cerebrospinal fluid drainage. Compared with the through hole opened at the bottom of the conventional puncture device, the through hole on the side wall will not affect the introduction of the puncture device, and the through hole on the side wall is not easily blocked during the introduction of the puncture device; both the puncture cannula and the puncture device are integrally formed, and can be assembled and disassembled through the locking holes and the locking latches, with simple and easy operation, which reduces the operation time to a certain extent and reduces the error rate. Description of the Drawings

[0021] Figure 1 It is an axonometric view of the intracranial puncture dilator in Embodiment 1;

[0022] Figure 2 It is a front view of the intracranial puncture dilator in Embodiment 1;

[0023] Figure 3 It is an axonometric view of the puncture cannula in Embodiment 1;

[0024] Figure 4Isometric view of the trocar in Embodiment 1;

[0025] Figure 5 Is Figure 4 Enlarged view of location A;

[0026] Figure 6 Isometric view of the intracranial puncture dilator in Embodiment 2;

[0027] Figure 7 Front view of the intracranial puncture dilator in Embodiment 2;

[0028] Figure 8 Bottom view of the intracranial puncture dilator in Embodiment 2;

[0029] Figure 9 Isometric view of the puncture cannula in Embodiment 2;

[0030] Figure 10 Isometric view of the trocar in Embodiment 2;

[0031] Figure 11 Isometric view of the intracranial puncture dilator in Embodiment 3;

[0032] Figure 12 Front view of the intracranial puncture dilator in Embodiment 3;

[0033] Figure 13 Bottom view of the intracranial puncture dilator in Embodiment 3;

[0034] Figure 14 Isometric view of the puncture cannula in Embodiment 3;

[0035] Figure 15 Isometric view of the trocar in Embodiment 3.

[0036] The reference numerals in the figures include:

[0037] Puncture cannula 1; keyhole 11; first handle 12; introduction scale 13; trocar 2; through hole 21; lock 22; second handle 23; fixed part 231; movable part 232. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0039] It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0040] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not limited to the present utility model.

[0041] Embodiment 1

[0042] This embodiment provides an intracranial puncture dilator, including: a puncture cannula 1 with openings at both ends and a puncture needle 2 sleeved on the puncture cannula 1 and detachably connected to the puncture cannula 1; both the puncture cannula 1 and the puncture needle 2 are made of a transparent elastic material; a plurality of locking holes 11 are opened along the axial direction of the proximal end of the puncture cannula 1; a plurality of through holes 21 are opened along the radial direction of the distal side wall of the puncture needle 2, and the plurality of through holes 21 are uniformly arranged along the axial direction of the puncture needle 2; a plurality of locking latches 22 matching the locking holes 11 are provided at the proximal end of the puncture needle 2; the distal end of the puncture needle 2 is semi-ellipsoidal.

[0043] Wherein, the puncture cannula 1 further includes: two first handles 12 provided at the proximal end of the puncture cannula 1 and symmetrically arranged about the axis of the puncture cannula 1; the two locking holes 11 are respectively opened at one ends of the two first handles 12 close to the puncture cannula 1.

[0044] Two second handles 23 symmetrically arranged about the axis of the puncture needle 2 are provided at the proximal end of the puncture needle 2, and the plurality of locking latches 22 are respectively provided at one ends of the two second handles 23 close to the puncture needle 2.

[0045] As a preferred implementation manner, the transparent elastic material is polycarbonate.

[0046] During assembly, medical staff sleeved the puncture needle 2 into the puncture cannula 1. During the sleeving process, the locking latches 22 of the puncture needle 2 match the locking holes 11 of the puncture cannula 1, so that the locking latches 22 can be snapped into the locking holes 11; after assembly, medical staff inserted the intracranial puncture dilator into the patient's intracranial cavity. During the placement process, cerebrospinal fluid flowed into the puncture needle 2 through the through holes 21 at the distal end of the puncture needle 2 and was processed by the suction device. A scale 13 was introduced on the outer wall of the puncture cannula 1 to prompt medical staff of the insertion depth. When inserted to the specified position, medical staff pinched the proximal ends of the locking latches 22 with two fingers, so that the distal ends of the locking latches 22 were disengaged from the locking holes 11, and then the puncture needle 2 was removed from the puncture cannula 1 and subsequent operations were carried out.

[0047] Embodiment 2

[0048] This embodiment provides an intracranial puncture dilator, including: a puncture cannula 1 with openings at both ends, and a puncturer 2 sleeved on the puncture cannula 1 and detachably connected to the puncture cannula 1; both the puncture cannula 1 and the puncturer 2 are made of a transparent elastic material; a plurality of locking holes 11 are formed in the proximal end of the puncture cannula 1 along the axial direction of the puncture cannula 1; a plurality of through holes 21 are formed in the distal side wall of the puncturer 2 along the radial direction of the puncturer 2, and the plurality of through holes 21 are uniformly arranged along the axial direction of the puncturer 2; a plurality of locking latches 22 matching the locking holes 11 are provided at the proximal end of the puncturer 2; the distal end of the puncturer 2 is semi-ellipsoidal.

[0049] Wherein, the puncture cannula 1 further includes: two first handles 12 provided at the proximal end of the puncture cannula 1 and symmetrically arranged about the axis of the puncture cannula 1; a plurality of the locking holes 11 are respectively formed in the middle parts of the two first handles 12.

[0050] Two second handles 23 symmetrically arranged about the axis of the puncturer 2 are provided at the proximal end of the puncturer 2; the second handle 23 includes: a fixed part 231 and a movable part 232 integrally formed with the fixed part; the locking latch 22 is fixedly provided at the distal end of the movable part 232.

[0051] As a preferred embodiment, the transparent elastic material is polycarbonate.

[0052] During assembly, medical staff sleeved the puncturer 2 into the puncture cannula 1. During the sleeving process, the locking latches 22 of the puncturer 2 match the locking holes 11 of the puncture cannula 1, so that the locking latches 22 can be snapped into the locking holes 11; after assembly, medical staff inserted the intracranial puncture dilator into the patient's intracranial cavity. During the placement process, cerebrospinal fluid flows into the puncturer 2 through the through holes 21 at the distal end of the puncturer 2 and is processed by a suction device. A scale 13 is introduced on the outer wall of the puncture cannula 1 to prompt medical staff of the insertion depth. When inserted to the designated position, medical staff simultaneously pinched the two movable parts 232 with two fingers, so that after the locking latches 22 are disengaged from the locking holes 11, the puncturer 2 is removed from the puncture cannula 1 and subsequent surgeries are performed.

[0053] Example 3

[0054] This embodiment provides an intracranial puncture dilator, comprising: a puncture cannula 1 with openings at both ends, and a puncture device 2 sleeved on the puncture cannula 1 and detachably connected to the puncture cannula 1; both the puncture cannula 1 and the puncture device 2 are made of a transparent elastic material; a plurality of locking holes 11 are formed in the proximal end of the puncture cannula 1 along the axial direction of the puncture cannula 1; a plurality of through holes 21 are formed in the distal side wall of the puncture device 2 along the radial direction of the puncture device 2, and the plurality of through holes 21 are uniformly arranged along the axial direction of the puncture device 2; a plurality of locking latches 22 matching the locking holes 11 are provided at the proximal end of the puncture device 2; the distal end of the puncture device 2 is semi-ellipsoidal.

[0055] Wherein, the puncture cannula 1 further comprises: a first handle 12 provided at the proximal end of the puncture cannula 1; a plurality of the locking holes 11 are all formed at one end of the first handle 12 away from the puncture cannula 1.

[0056] A second handle 23 is provided at the proximal end of the puncture device 2; the second handle 23 comprises: a fixing part 231 and two movable parts 232 symmetrically arranged with respect to the fixing part 231; the locking latches 22 are fixedly provided at the distal ends of the movable parts 232.

[0057] As a preferred embodiment, the transparent elastic material is polycarbonate.

[0058] During assembly, medical staff sleeved the puncture device 2 into the puncture cannula 1. During the sleeving process, the locking latches 22 of the puncture device 2 match the locking holes 11 of the puncture cannula 1, so that the locking latches 22 can be snapped into the locking holes 11; after the assembly is completed, medical staff inserted the intracranial puncture dilator into the patient's intracranial cavity. During the placement process, cerebrospinal fluid flows into the puncture device 2 through the through holes 21 at the distal end of the puncture device 2 and is processed by a suction device. A scale 13 is introduced on the outer wall of the puncture cannula 1 to prompt medical staff of the insertion depth. When the specified position is reached, medical staff simultaneously pinch the two movable parts 232 with two fingers, so that after the locking latches 22 are disengaged from the locking holes 11, the puncture device 2 is removed from the puncture cannula 1 and subsequent surgeries are performed.

[0059] In summary, in the present utility model, through holes are formed on the side wall of the puncture device for cerebrospinal fluid drainage. Compared with the through holes formed at the bottom of a conventional puncture device, the through holes on the side wall will not affect the insertion of the puncture device, and the through holes on the side wall are not easily blocked during the insertion process of the puncture device; both the puncture cannula and the puncture device are integrally formed, and the assembly and disassembly can be carried out through the locking holes and the locking latches, and the operation is simple and easy to master, which reduces the operation time to a certain extent and reduces the error rate.

[0060] The above are only the preferred embodiments of the present utility model, and thus do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intracranial puncture dilator, characterized in that: include: A puncture sleeve (1) with openings at both ends and a puncture device (2) sleeved on the puncture sleeve (1) and detachably connected to the puncture sleeve (1); Wherein, the proximal end of the puncture cannula (1) is provided with a plurality of locking holes (11) along the axial direction of the puncture cannula (1); The distal side wall of the puncture device (2) is provided with a plurality of through holes (21) along the radial direction of the puncture device (2); the proximal end of the puncture device (2) is provided with a plurality of lock buckles (22) matching the lock holes (11).

2. The intracranial puncture dilator according to claim 1, characterized in that: An introduction scale (13) is provided on the outer wall of the puncture sleeve (1).

3. The intracranial puncture dilator according to claim 1, characterized in that: The puncture sleeve (1) and the puncture device (2) are both made of transparent elastic material.

4. The intracranial puncture dilator according to claim 1, characterized in that: The plurality of through holes (21) are evenly arranged along the circumferential direction of the puncture device (2).

5. The intracranial puncture dilator according to claim 1, characterized in that: The distal end of the puncture device (2) is semi-ellipsoidal.

6. The intracranial puncture dilator according to claim 1, characterized in that: The puncture cannula (1) comprises: two first handles (12) arranged at the proximal end of the puncture cannula (1) and symmetrically arranged about the axis of the puncture cannula (1); a plurality of locking holes (11) are respectively opened at one end of the two first handles (12) close to the puncture cannula (1); The proximal end of the puncture device (2) is provided with two second handles (23) symmetrically arranged about the axis of the puncture device (2), and a plurality of locking buckles (22) are respectively arranged at one end of the two second handles (23) close to the puncture device (2).

7. The intracranial puncture dilator according to claim 1, characterized in that: The puncture cannula (1) comprises: two first handles (12) arranged at the proximal end of the puncture cannula (1) and symmetrically arranged about the axis of the puncture cannula (1); a plurality of locking holes (11) are respectively opened in the middle of the two first handles (12); The proximal end of the puncture device (2) is provided with two second handles (23) symmetrically arranged about the axis of the puncture device (2); the second handle (23) comprises: a fixed portion (231) and a movable portion (232) integrally formed with the fixed portion (231); the lock buckle (22) is fixedly arranged at the distal end of the movable portion (232).

8. The intracranial puncture dilator according to claim 1, characterized in that: The puncture cannula (1) comprises: a first handle (12) arranged at the proximal end of the puncture cannula (1); a plurality of locking holes (11) are all opened at an end of the first handle (12) away from the puncture cannula (1); A second handle (23) is provided at the proximal end of the trocar (2); the second handle (23) comprises: A fixed portion (231) and two movable portions (232) symmetrically arranged with respect to the fixed portion (231); The lock buckle (22) is fixedly arranged at the distal end of the movable portion (232).

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