CN219070511U - Dura mater reaming device and dura mater puncture system - Google Patents

Abstract

The utility model discloses a dura mater reaming device and a dura mater puncturing system. The dural reaming device includes a handle, a head tip, and an annular recess. A handle is disposed at a proximal end of the dural reaming device and the handle is configured for grasping by an operator during surgery. The head tip is disposed at a distal end of the dural reaming device and the head tip is configured to penetrate and enlarge a puncture of the dura mater. An annular groove is connected between the handle and the head tip. The annular groove is configured to be recessed inwardly relative to the handle and the head tip. According to the dura mater reaming device, the annular groove is formed between the handle and the head tip, so that the elastic dura mater can be sleeved on the annular groove, further the dura mater reaming device is prevented from continuously and excessively entering the inside of the dura mater, meanwhile, the feeling of falling air is transferred to an operator, the dura mater is prompted to be expanded and drilled in place, and the controllable drilling depth is ensured. The controllable drilling depth improves the safe reliability of the dura mater reaming device.

Description

Dura mater reaming device and dura mater puncture system

Technical Field

The utility model relates to medical equipment, in particular to a dura mater reaming device and a dura mater puncturing system.

Background

The hypertensive cerebral hemorrhage is a disease with higher fatality rate and disability rate in cerebrovascular diseases, so the hypertensive cerebral hemorrhage is seriously threatening the health of the national people.

For cerebral hemorrhage, if necessary, a drainage catheter is placed into the cranium to drain superfluous blood cerebrospinal fluid or blood clot, which requires drilling holes in the cranium, puncturing the dura mater on the inner side of the cranium with an instrument after drilling holes, and puncturing Kong Cheng on the dura mater with an instrument, and then inserting a drainage tube.

At present, doctors drill the dura mater directly by using an electric drill after drilling the skull, at the moment, the rotating speed of the electric drill is very high, the too large broken hole is easily caused, the depth of the drill is uncontrollable, and the electric drill is easily excessively stretched into the dura mater, so that the brain functions such as cerebral vascular injury, cerebral tissue injury, intracranial hemorrhage and the like are easily damaged. And because the electric drill rotates fast, can cause the blood vessel to draw under the dura mater and in the brain tissue and roll into and cause the massive hemorrhage in the process of boring the dura mater, and can make intracranial pressure produce certain fluctuation, this is very unfavorable to having the patient that intracranial pressure is higher.

Disclosure of Invention

The utility model provides a dura mater reaming device and a dura mater puncture system, which are used for improving the safety and reliability of reaming.

A first aspect of the present utility model provides a dural reaming device having a distal end that is further from an operator in use and a proximal end that is closer to the operator in use, the dural reaming device comprising:

a handle disposed at a proximal end of the dural reaming device and configured for grasping by an operator during surgery;

a head tip disposed at a distal end of the dural reaming device and configured to penetrate and enlarge a puncture of the dura mater; and

an annular groove is connected between the handle and the head tip, the annular groove being configured to be recessed inwardly relative to the handle and the head tip.

In some embodiments, the annular groove is smoothly connected with the head tip; and/or the annular groove is smoothly connected with the handle.

In some embodiments, the handle includes a body stem and an extension disposed at a distal end of the body stem, the extension being connected to the annular groove, and a portion of the extension adjacent the annular groove extending intracranially, a surface of the extension being configured as an inwardly concave arcuate surface.

In some embodiments, the handle comprises a body stem configured for rotation by an operator, wherein a surface of the body stem comprises a prismatic surface; alternatively, the surface of the main body rod part comprises a cylindrical surface, and knurling is arranged on the cylindrical surface; or, the surface of the main body rod part comprises a cylindrical surface, and a plurality of strip-shaped grooves which are arranged at intervals are arranged on the cylindrical surface, and the strip-shaped grooves extend along the axial direction of the main body rod part.

In some embodiments, the handle includes a body stem portion and a handle tail portion that is gap-coupled to a proximal end of the body stem portion, the body stem portion being rotatably disposed relative to the handle tail portion.

In some embodiments, the ratio between the diameter of the groove bottom of the annular groove and the diameter of the proximal end of the head tip is less than 0.8.

In some embodiments, the head tip is configured to be tapered and has a plurality of gullets.

In some embodiments, the thickness of the slot walls of the slots tapers in a direction from the bottom of the slots to the opening.

In some embodiments, the head tip is made of a rigid material; alternatively, the dura mater reaming device can be re-sterilized for use.

The second aspect of the utility model provides a dura mater puncture system, which comprises a dura mater puncture needle, a drainage tube and the dura mater reaming device.

In accordance with aspects provided by the present utility model, the dural reaming device has a distal end that is further from the operator when in use and a proximal end that is closer to the operator when in use. The dural reaming device includes a handle, a head tip, and an annular recess. A handle is disposed at a proximal end of the dural reaming device and the handle is configured for grasping by an operator during surgery. The head tip is disposed at a distal end of the dural reaming device and the head tip is configured to penetrate and enlarge a puncture of the dura mater. An annular groove is connected between the handle and the head tip. The annular groove is configured to be recessed inwardly relative to the handle and the head tip. According to the dura mater reaming device, the annular groove is formed between the handle and the head tip, so that the elastic dura mater can be sleeved on the annular groove, further the dura mater reaming device is prevented from continuously and excessively entering the inside of the dura mater, meanwhile, the feeling of falling air is transferred to an operator, the dura mater is prompted to be expanded and drilled in place, and the controllable drilling depth is ensured. The controllable drilling depth improves the safe reliability of the dura mater reaming device, and avoids secondary injury to patients.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural view of a dura mater reaming device according to an embodiment of the present utility model.

Fig. 2 is an enlarged view of a portion of the head tip region of the dura mater reaming device of fig. 1.

Fig. 3 is a partial block diagram of the dura mater reaming device of fig. 1.

Fig. 4 is a cross-sectional view of the head tip of the dura mater reaming device of fig. 1.

Fig. 5 is an enlarged view of a portion of the handle tail region of the dura mater reaming device of fig. 1.

Fig. 6 is a cross-sectional view of the body stem of fig. 1.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways and the spatially relative descriptions used herein are construed accordingly.

Referring to fig. 1, an embodiment of the present utility model provides a dura mater reaming device. The dura mater reaming device of embodiments of the present utility model has a distal end that is farther from the operator when in use and a proximal end that is closer to the operator when in use. The dural reaming device comprises a handle 1, a head tip 2 and an annular recess 3. A handle 1 is provided at the proximal end of the dural reaming device and the handle 1 is configured for grasping by an operator during surgery. The head tip 2 is disposed at the distal end of the dural reaming device and the head tip 2 is configured to penetrate and enlarge a puncture of the dura mater. An annular recess 3 is connected between the handle 1 and the head tip 2. The annular groove 3 is configured to be recessed inwardly with respect to the handle 1 and the head tip 2.

According to the dura mater reaming device provided by the embodiment of the utility model, the annular groove 3 is arranged between the handle 1 and the head tip 2, so that the elastic dura mater can be sleeved on the annular groove 3, further the dura mater reaming device is prevented from continuously and excessively entering the inside of the dura mater, meanwhile, the feeling of falling air is also transmitted to an operator, the dura mater is prompted to be expanded and drilled in place, and the controllable drilling depth is ensured. The controllable drilling depth improves the safety and reliability of the dura mater reaming device and avoids secondary injury to patients.

In some embodiments, referring to fig. 2, the annular groove 3 is smoothly connected to both the handle 1 and the head tip 2. In this way, during reaming, the dura mater makes a smooth transition from contact with the head tip 2 to contact with the annular recess 3, and is not abrupt, thereby enhancing reaming. Further, the annular groove 3 is also smoothly connected with the handle 1, so that when the dura mater reaming device is required to be taken out after reaming is completed, the contact between brain tissue and the annular groove is smoothly transited without abrupt change, and adverse effects on the brain tissue caused by abrupt change are prevented.

Of course, in other embodiments not shown in the drawings, the annular groove may also be a groove having a rectangular cross-sectional shape. At the moment, the dura mater is sleeved on the annular groove, so that the dura mater reaming device is prevented from continuously and excessively entering the inside of the dura mater, and further the function of reaming in-place prompt for operators is achieved.

In order to allow the operator to have a more pronounced feeling of falling empty when drilling into place during operation, the distance between the bottom surface of the annular recess 3 and the centre line is significantly smaller than the distance between the surface of the head tip 2 and the centre line. In particular, the diameter of the groove bottom surface of the annular groove 3 is significantly smaller than the diameter of the proximal end of the head tip 2. In some embodiments, as shown in fig. 3, the ratio between the diameter D1 of the groove bottom surface of the annular groove 3 and the diameter D2 of the proximal end of the head tip 2 is less than 0.8. Specifically, for example, the ratio between the diameter D1 of the groove bottom surface of the annular groove 3 and the diameter D2 of the proximal end of the head tip 2 is 0.67.

It should be noted here that, in the present embodiment, the head tip 2 has a tapered structure, and thus the diameters thereof are different at different positions. The diameter D2 of the proximal end of the head tip 2 here refers to the diameter of the large diameter end of the head tip 2.

As shown in fig. 1, in some embodiments, the handle 1 includes a body stem 11 and an extension 12 disposed at a distal end of the body stem 11. As shown in fig. 1, the projecting portion 12 is directly connected with the annular groove 3. In the reaming process, the dura mater is sleeved on the annular groove 3, the part, close to the annular groove 3, of the extending part 12 extends into the cranium and can be in contact with brain tissues, the surface of the extending part 12 is in an inwards concave cambered surface, the surface of the extending part 12 is inwards concave, the rotary friction resistance during reaming is reduced, the reaming difficulty of an operator is reduced, and damage to the brain tissues due to friction between the part, extending into the cranium, of the extending part 12 and the brain tissues is also effectively avoided.

To increase friction to improve operator comfort in reaming, in some embodiments, the handle 1 includes a body stem 11. The body stem 11 is configured for rotation by an operator, wherein the surface of the body stem 11 comprises prismatic surfaces. Specifically, as shown in fig. 6, in one embodiment, the surface of the main body rod 11 is a hexagonal prism surface, which increases friction force and facilitates the flexible twisting of the fingers of the operator. Of course, in other embodiments, the surface of the body stem 11 may be a pentagonal prism, an eight-prismatic prism, or the like.

To further increase operator comfort during operation, in other embodiments, the surface of the body stem includes a cylindrical surface with knurling provided thereon. For example, the main body rod portion is a cylinder with knurls on the surface, and thus when an operator rotates the main body rod portion with fingers, the knurls are arranged on the whole surface of the main body rod portion, and the knurls are arranged at any position of the operator during operation, so that the friction force is constant during the whole operation, and the operation comfort level is further improved.

In other embodiments, the surface of the body stem includes a cylindrical surface with at least two spaced apart grooves extending axially of the body stem. When an operator operates, the friction force can be increased by arranging the strip-shaped grooves, and the fingers of the operator can twist flexibly.

During a reaming operation, the operator rotates the body stem 11 with his hand pressing against the handle tail 13, and in order to improve the comfort of operation, in some embodiments, the handle 1 comprises a body stem 11 and a handle tail 13 that is connected at the proximal end of the body stem 11 with a gap, as shown in fig. 1 and 5. The body stem 11 is rotatably disposed relative to the handle tail 13. Thus, when reaming, the tail 13 of the handle is contacted with the palm and has no relative displacement, so that the operation comfort is enhanced.

As shown in fig. 5, the body stem 11 extends into the handle tail 13 and is rotatably connected to the handle tail 13 by a seal ring 14. Fig. 5 exemplarily shows that the lower surface of the handle tail 13 near the body stem 11 is configured as a cambered surface. Of course, the present application is not limited to the shape of the handle tail 13. For example, it is also possible that the handle tail 13 is of circular, arcuate or planar design. The structure and shape of the upper surface of the handle tail 13 are not limited in this embodiment, and may be planar, concave or convex.

To enhance the reaming effect, as shown in fig. 2 and 4, in some embodiments, the head tip 2 is configured to be tapered and has a plurality of gullets 21. The head tip 2 is conical and has a surface provided with a plurality of tooth grooves 21 so that the tip ends of the tooth groove walls of the tooth grooves 21 come into contact with the dura mater to grind open and enlarge the puncture in the dura mater when reaming.

In some embodiments, as shown in fig. 4, the thickness of the slot walls of the slots gradually decreases in a direction from the bottoms of the slots to the openings. The arrangement makes the top end of the tooth groove wall form a sharp sheet, so that the puncture hole is easier to ream.

The dura mater reaming device is operated by fingers, has slower rotating speed and no electric drill, so that the caliber of a puncture is proper, the matching degree with a drainage tube is good, the dura mater bleeding is less, the blood vessel under the dura mater is especially protected, and the dura mater drill hole is fast to heal after the operation tube drawing, and the damage to a patient is small.

In some embodiments, the head tip 2 is made of a rigid material.

In some embodiments, the dural reaming device can be re-sterilized for use. The use cost is reduced, and the medical expense of the patient is reduced.

The embodiment of the utility model also provides an dura mater puncture system which comprises a dura mater puncture needle, a drainage tube and the dura mater reaming device of each embodiment. The dura mater puncture system is used after a hole is drilled in the skull of a patient, specifically, after the dura mater is punctured by using a dura mater puncture needle, the dura mater reaming device of the embodiment is rotated left and right to enlarge the diameter of the dura mater puncture hole, and then the dura mater reaming device is pulled out and put into the drainage tube.

In conclusion, the dura mater reaming device of the utility model can enlarge the puncturing opening of the dura mater by manually opening, and the reaming process is safe and reliable, so that the blood vessels under the dura mater can be prevented from being damaged in a sharp manner. And the depth of penetration is controlled by providing an annular groove. In addition, the dura mater reaming device realizes the improvement of the operation hand feeling through a plurality of improvement means, and is suitable for opening the puncturing mouth for enlarging the dura mater before the drainage tube is arranged in neurosurgery. In some embodiments, the dural reaming device is used for extracerebral drainage and intracranial hematoma drainage.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (10)

1. A dural reaming device having a distal end that is further from an operator in use and a proximal end that is closer to the operator in use, the dural reaming device comprising:

a handle (1) disposed at a proximal end of the dural reaming device and the handle (1) is configured for grasping by an operator during surgery;

a head tip (2) disposed at a distal end of the dural reaming device and the head tip (2) configured to penetrate and enlarge a puncture of dura mater; and

an annular groove (3) connected between the handle (1) and the head tip (2), the annular groove (3) being configured to be recessed inwardly with respect to the handle (1) and the head tip (2).

2. The dura mater reaming device according to claim 1, characterized in that the annular groove (3) is smoothly connected with the head tip (2); and/or the annular groove (3) is smoothly connected with the handle (1).

3. The dura mater reaming device according to claim 1, wherein the handle (1) comprises a main body shaft portion (11) and an insertion portion (12) provided at a distal end of the main body shaft portion (11), the insertion portion (12) is connected with the annular groove (3), and a portion of the insertion portion (12) near the annular groove (3) is inserted into the cranium, and a surface of the insertion portion (12) is configured as an inwardly concave arc surface.

4. The dura mater reaming device of claim 1, wherein the handle (1) comprises a body stem (11) configured for rotation by an operator, wherein a surface of the body stem (11) comprises a prismatic surface; alternatively, the surface of the main body rod part comprises a cylindrical surface, and knurling is arranged on the cylindrical surface; or, the surface of the main body rod part comprises a cylindrical surface, a plurality of strip-shaped grooves which are arranged at intervals are arranged on the cylindrical surface, and the strip-shaped grooves extend along the axial direction of the main body rod part.

5. The dura mater reaming device of claim 1, wherein the handle (1) comprises a body stem (11) and a handle tail (13) in clearance connection with a proximal end of the body stem (11), the body stem (11) being rotatably arranged relative to the handle tail (13).

6. The dural reaming device of claim 1, wherein the ratio between the diameter of the groove bottom of the annular groove (3) and the diameter of the proximal end of the head tip is less than 0.8.

7. The dura mater reaming device according to any one of claims 1 to 6, wherein the head tip (2) is configured as a cone and has a plurality of gullets.

8. The dura mater reaming device of claim 7, wherein a thickness of a tooth socket wall of the tooth socket is tapered in a direction from a bottom of the tooth socket to an opening.

9. The dura mater reaming device of claim 1, wherein the head tip (2) is made of a rigid material; alternatively, the dura mater reaming device may be re-sterilized for use.

10. An dura mater puncture system comprising an dura mater puncture needle, a drainage tube, and the dura mater reaming device according to any one of claims 1 to 9.

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