CN218684584U - Telescopic curet - Google Patents

Abstract

The utility model relates to a retractable curette, which comprises a support rod, a curette part arranged at one end of the support rod, and a handle arranged at the other end of the support rod; the handle is integrally arranged with the support rod, and the handle The outer wall of the handle is provided with four grooves at intervals along its length direction, and the handle is provided with installation grooves along its thickness direction. The retractable curette is used through the cooperation of the support rod, curette part, handle, groove, installation groove, connecting piece and thumb sleeve. When the device is in use, the medical staff hold the handle while holding The middle finger, ring finger and little finger are put into the inner side of the groove, and then the thumb is inserted into the inner side of the thumb sleeve. In this state, hold the handle and use the curette to scrape the lesion, then the use of the device is stable. The performance is better, and it is possible to prevent the device from slipping out of the hand of the medical staff due to physical exhaustion of the medical staff or other reasons.

Description

A retractable curette

technical field

The utility model relates to the technical field of medical appliances, in particular to a retractable curette.

Background technique

Transnasal neuroendoscopic skull base surgery has the advantages of wide surgical angle, high illumination intensity, strong direct vision, and small trauma, so it is widely used in skull base space-occupying lesions (such as pituitary adenoma, craniopharyngioma, Rathke cyst, etc.) , epidermoid cyst, meningioma, etc.) excision and treatment.

Transnasal endoscopic skull base surgical instruments (curettes, strippers, forceps, etc.) need to enter the skull base through the nasal cavity, so their size and shape are limited by the local structures of the nasal cavity, sphenoid sinus, and sellar region. To some extent, it will limit the effective removal of space-occupying lesions. Usually, the size of the end surface of the surgical instrument from the transnasal approach to the skull base does not exceed 10 mm, which not only ensures that the surgical instrument enters the skull base smoothly, but also ensures that the nasal cavity is not damaged.

At present, the surgical instruments that enter the skull base through the nasal approach include straight, arc, and curved types, and all of them are fixed in length and cannot be adjusted by telescopic adjustment, especially horizontally (perpendicular to the nose of the surgical instrument).

What needs to be explained here is that when the tumor is huge and involves space-occupying lesions in the cavernous sinus, hypothalamus, third ventricle, optic chiasm, etc., since the surgical instruments cannot be stretched laterally, they cannot fully reach the space-occupying lesions, so that the space-occupying lesions cannot be realized. The effective removal of bit lesions affects the surgical effect.

In addition, during the operation process, medical personnel in this field need to hold the above-mentioned surgical instruments for a long time to perform surgical treatment on patients. Hours, under this high-intensity work, medical staff often have surgical instruments slipping out of the medical staff's hands due to lack of physical strength or other uncontrollable factors, which will directly affect the order of the surgical process conduct.

Utility model content

In view of this, the purpose of this utility model is to provide a retractable curette to solve one of the above-mentioned defects.

The utility model is realized through the following technical solutions:

A retractable curette, comprising a support rod, a curette portion disposed at one end of the support rod, and a handle disposed at the other end of the support rod; the handle is integrated with the support rod, and the outer wall of the handle is along the Four grooves are spaced apart in its length direction, and the handle is provided with a mounting groove along its thickness direction. A connecting piece is arranged inside the mounting groove, and a thumb sleeve is connected to the end of the connecting piece away from the mounting groove.

Further, the inside of the support rod is a hollow structure, and the outer wall of the support rod is provided with an opening communicating with the inside, and the inside of the support rod is provided with an adjustment assembly for adjusting the horizontal sliding of the curette part inside the opening.

Further, the adjustment assembly includes a first gear and a second gear arranged inside the support rod from bottom to top, and the first gear and the second gear are driven by a chain; on the support rod, the position corresponding to the first gear There is a through hole communicating with the inside, and the through hole is equipped with a rotating rod connected to the first gear. The end of the rotating rod away from the first gear extends to the outside of the support rod through the through hole. The rotating The other end of the rod passes through the first gear and extends to the inner wall of the support rod, and is connected with the inner wall of the support rod. The inner side of the through hole and the inner wall of the support rod are respectively connected to the rotating rod through bearings; the middle part of the second gear It is hollow, and the hollow inner side corresponding to the second gear is provided with a sleeve, the inner wall of the support rod, and the position corresponding to the sleeve is provided with a threaded rod, and the sleeve is opened toward one end of the threaded rod along its length. A threaded hole extending in the direction, and the threaded hole matches the external thread thread on the surface of the threaded rod, and the end of the sleeve away from the threaded rod is connected to the curette; when the first gear rotates forward through the rotating rod, and The force is transmitted to the second gear through the chain, and the second gear and the sleeve are threadedly rotated relative to the threaded rod, so that the curette part moves toward the opening, so that the curette part is perpendicular to the support rod, and the scraping The spoon is extended horizontally.

Further, the connecting piece is a return spring, one end of the return spring is fixed to the inner bottom wall of the installation groove, and the other end of the return spring is connected to the thumb sleeve.

Further, the end of the handle away from the support rod is provided with a U-shaped protective part.

The beneficial effects of the utility model are:

The retractable curette is used through the cooperation of the support rod, the curette part, the handle, the groove, the installation groove, the connecting piece and the thumb cover. The middle finger, ring finger and little finger are put into the inner side of the groove, and then the thumb is inserted into the inner side of the thumb sleeve. In this state, hold the handle and use the curette to scrape the lesion, then the use of the device is stable. The performance is better, and it is possible to prevent the device from slipping out of the hand of the medical staff due to physical exhaustion of the medical staff or other reasons.

Other advantages, objectives and features of the present utility model will be set forth in the following description to some extent, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description.

Description of drawings

Fig. 1 is a sectional view of the utility model;

Fig. 2 is a partial cross-sectional view of the casing of the present utility model;

Fig. 3 is a partial perspective view of the handle of the present invention.

In the figure: 1. Grip; 2. Support rod; 3. Curette part; 4. Connector; 5. Thumb cover; 6. Groove; 7. Adjustment component; 703, chain; 704, rotating rod; 705, threaded rod; 706, sleeve pipe; 8, protection department.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the above description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "one side", "the other side" etc. is based on the orientation or positional relationship shown in the accompanying drawings, or is the product of the utility model The orientation or positional relationship that is customarily placed in use is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot It should be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

Furthermore, terms such as the term "same" do not mean that the components are absolutely identical, but slight differences may exist. The term "vertical" just means that the positional relationship between components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

Please refer to Figures 1-3, the utility model provides a technical solution: a retractable curette, including a support rod 2, a curette part 3 arranged at one end of the support rod 2, and a handle arranged at the other end of the support rod 2. handle 1; the handle 1 and the support rod 2 are integrated, the outer wall of the handle 1 is provided with four grooves 6 at intervals along its length direction, the handle 1 is provided with a mounting groove along its thickness direction, and the inside of the mounting groove is provided with Connecting piece 4, the end of the connecting piece 4 away from the installation groove is connected with a thumb cover 5, the connecting piece can be a structure such as a fixed rod, which is installed on the inside of the installation groove by welding or other fixing methods, and the thumb cover can be connected by adhesion, etc. Other fixing methods are connected with the fixing rod;

What needs to be explained here is how to use the traditional curette composed of the support rod, handle and curette, how to use this medical device in endoscopic skull base surgery, and how to remove the lesion of the patient. The prior art in this field is not the technical problem that this application intends to solve in essence, so this application does not do too many details to this; , when the medical staff hold the traditional curette and work for a long time, it is easy to cause the traditional curette to slip out of the hand of the medical staff due to lack of physical strength of the technical personnel in the field or other uncontrollable factors (touching the hand of the medical staff by the outside world), which will affect the operation the orderly conduct of the process”;

When using the technical solution of the present application, the medical personnel hold the grip, fit the index finger, middle finger, ring finger and little finger to the inner side of the groove, and snap the thumb to the inner side of the thumb sleeve, and then put the support rod together with the curette through the nose The approach is sent to the base of the skull, and the curette is used to scrape the lesion;

The groove here is engaged with the four fingers, which can increase the stability of the device. When uncontrollable factors occur, even if the four fingers are out of contact with the handle, the thumb can still be engaged to the handle. The inner side of the thumb sleeve, the device can be in a suspended shape, and at this time, the device is still not separated from the hands of the medical staff, so the operation and treatment of the patient can be carried out normally and orderly.

In this embodiment: the inside of the support rod 2 is a hollow structure, the outer wall of the support rod 2 is provided with an opening communicating with the inside, and the inside of the support rod 2 is provided with an adjustment assembly for adjusting the horizontal sliding of the curette part 3 on the inside of the opening 7.

The adjustment assembly 7 includes a first gear 701 and a second gear 702 arranged inside the support rod 2 from bottom to top, and the first gear 701 and the second gear 702 are driven by a chain 703; The position is provided with a through hole communicating with the inside, the through hole is equipped with a rotating rod 704 connected to the first gear 701, and the end of the rotating rod 704 away from the first gear 701 extends to the outside of the support rod 2 through the through hole , the other end of the rotating rod 704 runs through the first gear 701 and extends to the inner wall of the supporting rod 2, and is connected with the inner wall of the supporting rod 2, and the inner side of the through hole and the inner wall of the supporting rod 2 are respectively connected with the rotating rod 704 through bearings;

The cooperation between the rotating rod and the bearing here can be understood as supporting the first gear, and the setting of the bearing can ensure the normal rotation of the rotating rod; the middle part of the second gear 702 is hollow, and corresponds to the hollow of the second gear 702 A sleeve 706 is provided on the inner side to support the inner wall of the rod 2, and a threaded rod 705 is provided at the position corresponding to the sleeve 706. The end of the sleeve 706 facing the threaded rod 705 is provided with a threaded hole extending along its length direction, and the thread The hole matches the external thread on the surface of the threaded rod 705, and the end of the sleeve 706 away from the threaded rod 705 is connected to the curette part 3; when the first gear 701 rotates forward through the rotating rod 704, the force is transmitted through the chain 703 To the second gear 702, the second gear 702 and the sleeve 706 are screwed relative to the threaded rod 705, so that the curette part 3 moves toward the opening, so that the curette part 3 is perpendicular to the support rod 2, and The curette part 3 is extended horizontally;

In the actual use of this embodiment, the medical personnel hold the handle, extend the support rod and the curette into the human body through the nasal approach, and use the curette to scrape off the lesion. When the lesion is located, manually rotate the rotating rod in the forward direction, so that the rotating rod drives the first gear to rotate, and the rotating force is transmitted to the second gear through the chain, and the second gear rotates accordingly. On this basis, the casing rotates accordingly. The threaded hole on the inner side of the casing and the threaded rod are screwed, so that the casing gradually extends from the opening to the outside of the support part with the curette part, thereby expanding the effective working range of the curette part (increasing the curettage of the lesion). surface removal), and when the curette has scraped off the lesion, turn the rotating rod in the opposite direction, so that the first gear rotates in the opposite direction, and the chain transmits this force to the second gear again, so that the casing follows the The curette moves towards the direction of the threaded rod, so as to achieve the purpose of shrinking the curette to the inside of the support rod, thereby further ensuring that the support rod and the curette are recovered inside the human body to avoid the curette. Too much body stays outside the supporting part, so that when the device is recovered, the curette part will cause damage to other organs around the nasal approach.

In this embodiment: the connector 4 is a return spring, one end of the return spring is fixed on the inner bottom wall of the installation groove, the other end of the return spring is connected with the thumb sleeve 5, and the return spring can be fixed on the inner wall of the installation groove by welding , further, a fixed mounting plate is arranged between the thumb sleeve and the return spring, the mounting plate and the return spring are welded, and the mounting plate and the thumb sleeve can be fixed by adhesion;

Here, the connecting piece is further defined as a return spring, the purpose of which is to allow the thumb to have a certain degree of mobility, so as to prevent the connecting piece from being a fixed structure, and the medical staff working for a long time, which will cause the thumb joint to snap to the inside of the thumb sleeve and cause finger stiffness The phenomenon.

In this embodiment: the end of the handle 1 away from the support rod 2 is provided with a U-shaped protective part 8, where a protective part is further provided, the purpose of which is to provide certain support for the hands of the medical staff, thereby further enhancing For the stability of the device, the protective part can be fixed on the end of the handle by welding.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (5)

1. A retractable curette, comprising a support rod (2), a curette part (3) arranged at one end of the support rod (2), and a handle (1) arranged at the other end of the support rod (2); It is characterized in that: the handle (1) and the support rod (2) are integrated, the outer wall of the handle (1) is provided with four grooves (6) at intervals along its length direction, the handle (1) ) is provided with a mounting groove along its thickness direction, a connecting piece (4) is arranged on the inner side of the mounting groove, and a thumb sleeve (5) is connected to the end of the connecting piece (4) away from the mounting groove. 2. The retractable curette according to claim 1, characterized in that: the inside of the support rod (2) is a hollow structure, and the outer wall of the support rod (2) is provided with an opening communicating with the inside, so An adjustment assembly (7) for adjusting the horizontal sliding of the curette portion (3) inside the opening is provided inside the support rod (2). 3. The retractable curette according to claim 2, characterized in that: the adjustment assembly (7) includes a first gear (701) and a second gear (702) arranged inside the support rod (2) from bottom to top ), the first gear (701) and the second gear (702) are driven by a chain (703); on the support rod (2), there is a communication channel at the position corresponding to the first gear (701) hole, the through hole is equipped with a rotating rod (704) connected to the first gear (701), and the end of the rotating rod (704) away from the first gear (701) extends to the support rod through the through hole ( 2), the other end of the rotating rod (704) passes through the first gear (701) and extends to the inner wall of the supporting rod (2), and is connected with the inner wall of the supporting rod (2). The inner walls of the support rods (2) are respectively connected to the rotating rods (704) through bearings; the middle part of the second gear (702) is hollow, and a sleeve (706) is arranged on the hollow inner side corresponding to the second gear (702) ), the inner wall of the support rod (2), and a threaded rod (705) is provided at the position corresponding to the sleeve (706), and the sleeve (706) is opened toward one end of the threaded rod (705) along its length The threaded hole extending in the direction, and the threaded hole matches the external thread thread on the surface of the threaded rod (705), and the end of the sleeve (706) away from the threaded rod (705) is connected with the curette part (3); when the The first gear (701) rotates positively through the rotating rod (704), and transmits this force to the second gear (702) through the chain (703), and the second gear (702) and the bushing (706) are relatively The rod (705) is threaded to make the curette part (3) move towards the opening, so that the curette part (3) is vertical relative to the support rod (2), and the curette part (3) is extended horizontally sports. 4. The retractable curette according to any one of claims 1-3, characterized in that: the connecting piece (4) is a return spring, one end of the return spring is fixed on the inner bottom wall of the installation groove, and the return spring The other end of spring is connected with thumb sleeve (5). 5. The retractable curette according to claim 4, characterized in that: the end of the handle (1) facing away from the support rod (2) is provided with a U-shaped protective part (8).

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