CN115486949A

CN115486949A - Headgear with length adjustable connector

Info

Publication number: CN115486949A
Application number: CN202211187069.0A
Authority: CN
Inventors: 聂晟; 高翔; 黄毅
Original assignee: Ningbo First Hospital
Current assignee: Ningbo First Hospital
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-20

Abstract

The present invention relates to headgear with a length adjustable connector comprising a headgear and a connector mounted to the headgear for securing a medical instrument. The connector comprises an outer sleeve main body, an inner core main body, a reversible structure and a fixing rope main body, the outer sleeve main body is sleeved at the outer end of the inner core main body, the reversible structure is installed on the inner core main body, the fixing rope main body is suitable for being connected to the inner core main body and the outer sleeve main body, the fixing rope main body is tightened through rotation of the outer sleeve main body and the inner core main body, loosening of the fixing rope main body can be achieved through the reversible structure, and therefore the length of the fixing rope main body can be adjusted.

Description

Headgear with length adjustable connector

Technical Field

The invention relates to the technical field of medical instruments, in particular to a head frame with a length-adjustable connector for cranium operation.

Background

In modern life, due to unhealthy diet and bad habits of people, physical diseases of people are more and more, wherein serious diseases are diseases of tumors, and craniocerebral tumors, intracranial aneurysms, vascular malformations and the like are common craniocerebral diseases. In the treatment of tumor diseases, surgical treatment is mainly used. When intracranial surgery is performed, the operation and treatment effect of doctors can be influenced by the fact that the skull is not firmly fixed in the operation. Therefore, craniocerebral surgery must be performed with a fixed position that facilitates the surgical procedure to facilitate exposure of the field of view at the surgical site. Meanwhile, the comfortable and good body position of a patient is also an important condition for anesthesia and operation, so the quality of the head frame fixing device for the craniocerebral surgery greatly influences the operation.

General cranium brain mount can do arbitrary regulation such as front and back, horizontal hunting, height lift according to the operation needs to in order to obtain best head position and position, made things convenient for the operation and the anesthesia management of operation, play reliable guarantee effect to the operation is gone on smoothly, be the indispensable ideal instrument of neurosurgery.

In head surgery, a head support is required to fix the head of a patient for facilitating the surgical operation. In addition, in the operation, a large number of small surgical instruments are needed to assist an operator in completing the intracranial operation, and the small surgical instruments are usually fixed on the head support by the connector in a winding and fixing mode, so that the operator of the surgical instrument can conveniently take the instrument for performing the operation, and the connector plays an important role in using the head frame. The problem of current connector lies in when realizing the fixing through the mode of winding, whole length adjustment difficulty, can not loosen after the winding is fixed moreover, in other words just fix to be irreversible, consequently also can cause inconvenient when using, can make the small-size apparatus after the fixing unable take off, cause some drawbacks after using the completion.

Disclosure of Invention

One advantage of the present invention is to provide a headgear with a length-adjustable connector, the connector of the headgear with a length-adjustable connector including a reversible structure and a fixing cord body, the reversible structure allowing the length of the fixing cord body to be arbitrarily adjusted when the connector fixes a medical device, so that the connector can be reused, and the use cost of the connector can be reduced.

Another advantage of the present invention is to provide a headgear with a length adjustable connector, wherein the length of the securing strap of the connector can be adjusted at will, and medical devices can be conveniently secured, so that an operator can better access surgical devices during a surgical procedure, and the operator can complete an intracranial surgical procedure more quickly, and the operation time can be shortened

Another advantage of the present invention is to provide a headgear with a length adjustable connector that is mounted to the core body in a reversible configuration for ease of use.

Another advantage of the present invention is to provide a headgear with a length adjustable connector that is simple and less fragile.

Another advantage of the present invention is to provide a headgear with a length adjustable connector that is simple in reversible construction, inexpensive to manufacture, and does not increase manufacturing and usage costs due to the added length adjustment function.

It is another advantage of the present invention to provide a headgear with a length adjustable connector that can secure small surgical devices via the length adjustable connector.

Another advantage of the present invention is to provide a headgear with a length adjustable connector that can width adjust a retaining cord secured to the connector for small surgical instruments to accommodate surgical instruments of different widths.

It is another advantage of the present invention to provide a headgear with a length adjustable connector that is reversible for adjustment of a securing cord for securing small surgical devices and that can be reused multiple times.

It is another advantage of the present invention to provide a headgear with a length adjustable connector that is highly efficient in maintaining a secure state to secure a surgical instrument and in pivoting to retract a securing cord that has been deeply secured.

Another advantage of the present invention is to provide a headgear with a length adjustable connector that can be controlled by an operator to the connecting rod to hide the ratchet from the surface.

Another advantage of the present invention is to provide a headgear with length adjustable connectors that can precisely secure small surgical instruments in a half-void for subsequent precision operations.

Another advantage of the present invention is to provide a headgear with an adjustable length connector that is less expensive to use and facilitates mass production than conventional connectors.

To meet the above objects and advantages, the present invention provides a headgear with a length adjustable connector, comprising:

a headgear with a length adjustable connector comprising:

a connector, wherein the connector comprises a sheath main body, an inner core main body, a reversible structure and a fixing rope main body, the sheath main body is suitable for being sheathed at the outer end of the inner core main body, the reversible structure is arranged on the inner core main body, the fixing rope main body is suitable for being connected with the sheath main body and the inner core main body, the fixing rope main body is suitable for being tightened through the forward rotation of the inner core main body relative to the sheath main body, and the fixing rope main body is suitable for being loosened through the reverse rotation of the inner core main body relative to the sheath main body through the reversible structure, so that the length of the fixing rope main body of the connector can be adjusted; and

a headgear comprising a guide adapter and a head clip, said guide adapter adapted to be mounted to said head clip, wherein said connector is adapted to be mounted to said head clip by said guide adapter.

According to an embodiment of the present invention, the core main body includes a fixing member and a holding member, and the fixing member is integrally connected to the holding member.

According to an embodiment of the present invention, the outer sheath body has an inner core accommodating chamber, and the fixing member of the inner core body is adapted to be accommodated in the outer sheath body through the outer sheath inner core accommodating chamber.

According to an embodiment of the present invention, the outer cover main body has a first fixing hole, a second fixing hole and a third fixing hole, the first fixing hole, the second fixing hole and the third fixing hole are located at the side end of the outer cover main body, the first fixing hole and the second fixing hole are located at one side of the outer cover main body, the third fixing hole is located at the other side of the outer cover main body, and the first fixing hole and the third fixing hole are located on the same axis.

According to an embodiment of the present invention, the fixing member has a first fixing groove and a second fixing groove, the first fixing groove and the second fixing groove are located at the side ends of the fixing member, the first fixing groove and the second fixing groove are recessed in the surface of the side end of the fixing member, and the fixing member further has a first inner hole and a second inner hole, the first inner hole and the second inner hole are located at the bottom of the first fixing groove and the second fixing groove, respectively, the first inner hole and the second inner hole transversely penetrate the fixing member, the first inner hole and the first fixing hole and the third fixing hole are located at the same axis, the second inner hole and the second fixing hole are located at the same axis, wherein one end of the fixing rope main body is adapted to pass through the first fixing hole, the first inner hole and the third fixing hole, respectively, and the other end is adapted to pass through the second fixing hole and the second fixing hole, respectively, such that when the inner core main body rotates relative to the outer jacket main body, both ends of the fixing rope main body are wound around the first fixing groove and the second fixing groove, respectively, so as to fix the outer wall of the outer jacket main body to the medical equipment.

According to one embodiment of the invention, the outer sleeve main body is provided with a clamping groove, the clamping groove is positioned on the inner wall of the outer sleeve main body, and the clamping groove is sunken in the inner wall of the outer sleeve main body and is communicated with the inner core accommodating cavity.

According to an embodiment of the present invention, the reversible structure comprises a control member and a connecting unit, the control member is mounted to the holding member, the engaging member is mounted to the fixing member, and the engaging member is adapted to engage with the engaging groove of the sheath body for fixing.

According to an embodiment of the present invention, the reversible structure further includes a connection unit, one end of the connection unit is connected to the engaging member, and the other end of the connection unit is connected to the control member, so as to control the movement of the control member, so that the connection unit connected to the control member drives the engaging member to move, thereby engaging and disengaging the engaging member with and from the slot, and thus the reversible rotation of the core body is achieved.

According to an embodiment of the present invention, the reversible structure further comprises an elastic member, one end of the elastic member is connected to the engaging member or the connecting unit, and the other end of the elastic member is connected to the core main body.

According to an embodiment of the present invention, the fixing member further has a mounting hole, and the engaging member is adapted to be mounted to the fixing member through the mounting hole.

A headgear with a length adjustable connector comprising:

a headgear body comprising a base providing a mounting platform, a plurality of head pegs connected at one end to said base and at the other end to said head pegs and said retracting member, respectively, said head pegs being adapted to secure a cranium of a patient, said retracting member being adapted to retract the cranium of a patient; and

a connector, said connector connected to said connector, said connector comprising a housing, an operating unit and a securing cord, said housing having a working chamber, said securing cord adapted to be secured between said housing and said operating unit, said operating unit comprising a second ratchet unit, said housing comprising a first ratchet unit, said first ratchet unit movably engaging said second ratchet unit to allow bi-directional rotation of said second ratchet unit to adjust the length of the coil between the securing points at the two ends of said securing cord.

According to an embodiment of the present invention, the housing has a hidden slot and a plurality of extension rods, the hidden slot is located between an inner wall and an outer wall of the housing, the first ratchet unit is adapted to be received in the hidden slot, the second ratchet unit in the working chamber is capable of rotating in both directions, one end of the extension rod is connected to the first ratchet unit, and the other end of the extension rod extends out of the upper end of the housing. .

According to an embodiment of the present invention, the housing includes a plurality of limiting members and a plurality of preformed grooves, the extending rod is adapted to be engaged by the limiting members, the limiting members are located in the hidden grooves, the preformed grooves are located on an inner wall of the housing, the first ratchet unit is adapted to pass through the preformed grooves, and the preformed grooves communicate the working chamber and the hidden grooves.

According to an embodiment of the present invention, the operation unit has a winding slot, one end of the fixing rope is suitable for being wound and placed in the winding slot, the other end of the fixing rope is suitable for passing through the operation unit, and the size of the coil is adjusted through the rotation of the operation unit.

According to an embodiment of the present invention, the housing includes a pair of limiting members and a plurality of preformed grooves, the preformed grooves communicate the working chamber and the outside, the first ratchet unit is adapted to pass through the preformed grooves, and the limiting members are adapted to pass through the preformed grooves to engage the first ratchet unit with the second ratchet unit to limit the rotation of the operating unit.

According to an embodiment of the present invention, the limiting member includes a rotating member and an elastic member, the elastic member has one end connected to the rotating member and the other end connected to the first ratchet unit, the rotating member is adapted to rotatably pass through the reserved slot, and the elastic member movably controls the first ratchet unit to contact with the second ratchet unit.

According to an embodiment of the present invention, the first ratchet units are respectively distributed on two sides of the housing to control the bidirectional rotation of the second ratchet unit.

Additional advantages and features of the invention will be set forth in the detailed description which follows and in part will be apparent from the description, or may be learned by practice of the invention as set forth hereinafter.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

FIG. 1 is an overall schematic view of a headgear with an adjustable length connector according to a preferred embodiment of the present invention.

FIG. 2A is an overall schematic view of a fixed state connector of a headgear with an adjustable length connector according to the preferred embodiment of the invention.

FIG. 2B is a half-section view of a fixed state connector of the headgear with an adjustable length connector according to the preferred embodiment of the present invention.

FIG. 3 is a cross-sectional view of the connector housing of the head frame with the length adjustable connector and the operating unit in cooperation according to the preferred embodiment of the present invention.

FIG. 4A is a cross-sectional schematic view of a stationary state housing of a head frame with an adjustable length connector according to the preferred embodiment of the invention.

FIG. 4B is a cross-sectional view of the adjustment state housing of the head frame with the length adjustable connector according to the preferred embodiment of the present invention.

FIG. 5A is a top perspective cross-sectional schematic view of a fixed-state connector of a headgear with an adjustable-length connector according to the preferred embodiment of the invention.

FIG. 5B is a top perspective cross-sectional schematic view of an adjustment state connector of a headgear with a length adjustable connector according to the preferred embodiment of the present invention.

FIG. 6 is an overall schematic view of a fixed-state connector of a headgear with an adjustable-length connector according to a second preferred embodiment of the present invention.

FIG. 7 is a top perspective cross-sectional schematic view of a fixed state connector of a headgear with an adjustable length connector according to the preferred embodiment of the invention.

Fig. 8 is a schematic diagram of the overall structure of a headgear with a length-adjustable connector according to a third preferred embodiment of the present invention.

FIG. 9 is a schematic diagram of the overall structure of a connector of a headgear with a length adjustable connector according to the preferred embodiment of the present invention.

Fig. 10 is a cross-sectional view of a jacket body of a headgear with an adjustable-length connector according to the preferred embodiment of the present invention.

Fig. 11 is a schematic illustration of the core body of a connector of a headgear with an adjustable length connector according to the preferred embodiment of the invention.

Fig. 12 is a cross-sectional view of the core body of a connector with a headgear having an adjustable length connector according to the preferred embodiment of the present invention.

Fig. 13 is an enlarged partial view of a connector of a headgear with an adjustable length connector according to the preferred embodiment of the invention.

FIG. 14 is a perspective connector view of a headgear with an adjustable length connector according to the preferred embodiment of the present invention.

FIG. 15 is an overall schematic view of a connector of a headgear with an adjustable length connector according to a fourth preferred embodiment of the present invention.

Fig. 16 is a cross-sectional view of the core body of a connector with a headgear having an adjustable length connector according to the preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is to be understood that the terms "a" and "an" are to be interpreted as meaning "at least one" or "one or more," i.e., that a number of an element can be one in one embodiment, while a number of the element can be one or more in another embodiment, and the terms "a" and "an" are not to be interpreted as limiting the number.

Referring to fig. 1-5, a headgear with an adjustable length connector according to a preferred embodiment of the present invention is illustrated. The headgear with the length adjustable connector is suitable for application to head fixation of a patient for craniotomy. The headgear with length adjustable connectors includes a headgear body 920 and a connector 910. In this embodiment, the headgear body 920 is used to fix the position of the head of the patient, and the connector 910 is used to fix the position of the small surgical instrument.

The headgear body 920 includes a base 921 and a plurality of head pins 922, the base 921 providing a mounting platform, and the head pins 922 are disposed on the base 921. The stud 922 is adapted to be inserted into the skull of a patient. In this embodiment, the number of the studs 922 is three. I.e. one end and the other end, respectively. When a patient lies on the operating table, one side of the two head nails 922 is firmly placed on the skull of the patient, and then pressure is applied to the head nails 922 with one number on the opposite side, so as to achieve the purpose of final fixation.

The head frame body 920 comprises a plurality of connecting members 926, wherein each connecting member 926 comprises a first vertical rod 9261 and a second vertical rod 9262, and the first vertical rod 9261 and the second vertical rod 9262 are respectively arranged on two sides of the base 921. In particular, the first upright 9261 is connected to the connector 910, and the second upright 9262 is connected to the remaining operating parts.

In particular, the headgear body 920 further includes a pair of retraction members 929. The connecting member 926 also includes a pair of extensions 9263. Said extension 9263 is connected to said second pole 9262 and said retracting member 929 is connected to said extension 9263. That is, said retracting member 929 is connected to said second pole 9262 by said extension 9263. The first pole 9261 and the second pole 9262 widen the longitudinal range of the base 921, and the extension 9263 widens the lateral range of the upper space of the base 921. Said extension 9263 is movably mounted to said second pole 9262, said retracting member 929 being adapted to retract the cranium of the patient. That is, the operator is adapted to control the movement of the retracting member 929 via the extension 9263.

The connector 910 includes a housing 911, an operation unit 912, and a fixing cord 913. The operating unit 912 is adapted to be mounted inside the housing 911, and the fixing cord 913 is adapted to be engaged between the housing 911 and the operating unit 912. That is, the fixing string 913 is disposed between the housing 911 and the operating unit 912 with an adjustable length. In other words, the operator can control the operation unit 912 to achieve the purpose that the fixing cord 913 is adjustably disposed between the housing 911 and the operation unit 912.

The housing 911 has a working chamber 9119, and the working chamber 9119 is suitable for placing the operation unit 912, that is, the operation unit 912 is suitable for being located in the working chamber 9119 for a snap-fit operation. In other words, the working chamber 9119 provides a working space for the operation unit 912 for an operator to perform operation control through the operation unit.

For convenience of description, the direction of the notch connecting the housing 911 and the operation unit 912 is defined as front, and the direction from the outer diameter to the center of the cross section of the housing is defined as inner.

The housing 911 has an inner wall and an outer wall, the inner wall being located outside the outer wall. The receiving cavity 119 is located inside the inner wall. That is, the inner wall surrounds the receiving cavity 119.

It is worth mentioning that the housing 911 comprises a first ratchet unit 9114 and a hidden groove 9118, wherein the first ratchet unit 9114 is adapted to be located in the hidden groove 9118, and the first ratchet unit 9114 is adapted to be located in the working chamber 9119. Specifically, the connector 910 has two states: a fixed state and an adjusted state. The conventional connector can be stably fixed compared to the two states of the conventional connector, but the adjustment state is an irreversible operation process in which only the small size of the fixing cord 913 can be adjusted, and the fixing cord 913, which has been reduced in coil size, cannot be turned back to be large. That is, the fixed state of the connector 910 may be a state in which the coil size of the fixing cord 913 is stably fixed, or a state in which the coil size of the fixing cord 913 that has been reduced is turned to be larger.

The first ratchet unit 9114 is adapted to engage with the operating unit 912, and specifically, when the connector 910 is in a fixed state, the first ratchet unit 9114 is located in the working cavity 9119, and at this time, the operating unit 912 is engaged with the first ratchet unit 9114. The operation unit 912 is irreversibly rotationally movable to one side along the plane in which the first ratchet unit 9114 is located. That is, the movement of the operation unit 912 at this time is irreversible and unidirectional.

When the connector 910 is in the adjustment state, the first ratchet unit 9114 is located in the hidden groove 9118, and the operation unit 912 is still located in the working cavity 9119, and the operation unit is not engaged by the first ratchet unit 9114, so that the operation unit 912 can rotate clockwise and counterclockwise in the working cavity 9119 without being constrained by the first ratchet unit 9114. That is, the movement of the operation unit 912 at this time is reversible and two-directional.

In detail, the housing 911 further has a reserved groove 9115, and the reserved groove 9115 is a passage groove which is arranged to communicate the working chamber 9119 and the hidden groove 9118. That is, the first ratchet unit 9114 effects state transition of the connector 910 through the reserved groove 9115. In other words, the pre-groove 9115 is located on the inner wall of the housing 911. The width of the reserved groove 9115 is larger than the single ratchet wheel width of the first ratchet wheel unit 9114. That is, the reserved groove 9115 is adapted to accommodate passage of the first ratchet unit 9114. In other words, the reserved groove 9115 allows the first ratchet unit 9114 to pass therethrough to switch the state of the connector 910.

In this embodiment, the first ratchet unit 9114 has a plurality of ratchets due to the characteristics of the first ratchet unit 9114 itself. Correspondingly, the number of the reserved grooves 9115 is also multiple, and the number of the ratchet wheels of the first ratchet wheel unit 9114 is equal to that of the reserved grooves 9115.

The housing 911 further includes a limiting member 9117, wherein the limiting member 9117 is disposed in the hidden groove 9118, that is, the limiting member 9117 is located between the inner wall and the outer wall. The limiting member 9117 is adapted to limit the position of the first ratchet unit 9114, so as to keep the first ratchet unit 9114 always located in the working chamber 9119 or always located in the hidden groove 9118 without being touched by an operator. That is, the restricting member 9117 serves to fix the position of the connector 910 after switching the state.

The housing 911 further includes a plurality of extension rods 9116, and the extension rods 9116 are connected to the first ratchet unit 9114. Each of the extension rods 9116 corresponds to a single ratchet of the first ratchet unit 9114. Specifically, the extension rod 9116 has a front end protruding out of the hidden groove 9118 and a rear end connected to the first ratchet unit 9114. That is, the side of the extension rod 9116 protruding outside the housing 911 is the control end of the first ratchet unit 9114. In other words, the operator can rotationally offset the first ratchet unit 9114 by controlling one end of the extension rod 9116, thereby performing the state transition of the connector 910.

The extension rod 9116 is suitable for being engaged with the limiting member 9117, and two states of the extension rod 9116 engaged with the limiting member 9117 respectively correspond to two states of the connector 910. That is, the connector 910 can be maintained in a stable state by the engagement between the limiting member 9117 and the extension rod 9116 in the fixed state and the adjustment state. In other words, the engagement between the limiting member 9117 and the extension rod 9116 limits the position of the first ratchet unit 9114 protruding from the working cavity 9119, so as to be limited by the range of the limiting member 9117, and prevent the phenomenon that the operating unit 912 cannot be controlled by the operator to rotate in the working cavity 9119 due to the fact that the first ratchet unit 9114 protrudes from the working cavity 9119 too much, that is, the operator cannot control the length of the fixing rope 913.

Due to the structural characteristics of the first ratchet units 9114 themselves, the front end of each ratchet of the first ratchet units 9114 is elongated, curved crescent shape. The operation unit 912 includes a second ratchet unit 9123, and the second ratchet unit 9123 corresponds to the first ratchet unit 9114. The second ratchet unit 9123 is adapted to be engaged by the first ratchet unit 9114. That is, the first ratchet unit 9114 allows only one-directional rotation of the second ratchet unit 9123. In other words, the first ratchet unit 9114 restricts the unidirectional movement of the second ratchet unit 9123 and does not move reversibly. The second ratchet unit 9123 is different in structure from the first ratchet unit 9114. The number of the second ratchet units 9123 is one, and the second ratchet units 9123 are of a single ratchet structure. That is, the second ratchet unit 9123 is made of a single piece, and the operation unit 912 can be controlled only by the operator, so as to control the rotation and movement of the second ratchet unit 9123 in the plane.

The operation unit 912 includes a first division plate 9126 and a dial piece 9129, and the first division plate 9126 divides the dial piece 9129 and the second ratchet unit 9123 into two parts. That is, the first separation disc 9126 separates the second ratchet unit 9123 and the paddle 9129. The toggle piece 9129 is located at the front of the second ratchet unit 9123. The paddle 9129 is adapted to be dialed by an operator, and the paddle 9129 is integrally formed. That is, the operator rotates the operation unit 912 by rotating the paddle 9129. In other words, the dial piece 9129 rotates the operation unit 912 as a whole. The toggle piece 9129 is located outside the working chamber 9119, and the first dividing disc 9126 serves as an opening of the working chamber 9119. That is, the working chamber 9119 is semi-enclosed with the first divider disk 9126 being open.

The operating unit 912 further includes a second divider 9127 and has a wire-receiving slot 9128. The second divider 9127 divides the second ratchet unit 9123 and the wire collection groove 9128 into two parts. That is, the second ratchet unit 9123 and the wire takeup groove 9128 are separated by the second divider 9127, and the second ratchet unit 9123 is in front of the wire takeup groove 9128. The fixing string 913 has two ends respectively located at two portions separated by the second separation disc 9127 in the fixing state and the adjusting state of the connector 910.

For convenience of illustration, the wire take-up groove 9128 is located in a first portion and the second ratchet unit 9123 is located in a second portion.

The wire-rewinding groove 9128 is adapted to receive the fixing rope 913 therein, that is, one end of the fixing rope 913 is fixed to the wire-rewinding groove 18.

It is worth mentioning that the housing 911 has a first hole 9111, a second hole 9112 and a third hole 9113, and the first hole 9111, the second hole 9112 and the third hole 9113 respectively penetrate through the housing 911. That is, the first, second, and

third holes

9111, 9112, 9113 communicate with the inner and outer walls of the housing 911, respectively. In other words, the first, second, and

third holes

9111, 9112, 9113 communicate with the working chamber 9119 and the exterior of the housing 911, respectively. The first, second, and

third apertures

9111, 9112, 9113 are adapted to allow the securing line 913 to pass through. That is, the securing cord 913 is adapted to pass through the first, second, and

third apertures

9111, 9112, 9113 to accomplish securing and adjustment.

The first holes 9111 and the second holes 9112 are arranged at intervals at one side of the housing 911, and the second holes 9112 correspond to the third holes 9113. That is, the third hole 9113 is located at the other side of the housing 911, and the second hole 9112 corresponds to the center of the third hole 9113. In other words, the securing cord 913 may pass vertically through the third hole 9113 through the second hole 9112.

It is worth mentioning that the fixing cord 913 enters the wire retracting groove 9128 between the operation unit 912 and the housing 911 through the first hole 9111. The fixing cord 913 enters the second portion between the operating unit 912 and the housing 911 through the second hole 9112.

It is more worth mentioning that the operating unit 912 has a first through hole 9121 and a second through hole 9122, the first through hole 9121 is located in the wire-rewinding groove 9128, and the second through hole 9122 is located in the second portion. The first through hole 9121 penetrates through the operation unit 912, and the second through hole 9122 penetrates through the second portion to communicate two sides. The first perforations 9121 are adapted to correspond with the first holes, and the second perforations 9122 are adapted to correspond with the second holes 9112 and the third holes 9113. That is, when the operating unit 912 rotates in the working chamber 9119, the first penetration hole 9121 and the first hole 9111 are positioned on the same line, and the second penetration hole 9122 and the second hole 9112 and the third hole 9113 are positioned on the same line at a certain time.

The operation of the fixed state of the connector 910 is exemplified. The operator will operating unit 912 with the supporting connection of casing 911 will operating unit 912 is in work chamber 9119 is interior through stir the piece 9129 drives the rotation, makes first perforation 9121 with first hole 9111 corresponds. The operator enters one end of the fixing rope 913 into the wire-rewinding groove 9128 along the first hole 121 and continues to pass through the first through hole 9121. Rotating the toggle piece 9129 so far causes rotation of the operation unit 912, so that the fixing rope 913 passing through the first perforation 9121 is fixed, and pulls a certain length of the fixing rope 913 into the wire rewinding slot 9128.

At this time, the first ratchet unit 9114 is located in the working chamber 9119, the operation unit 912 located in the working chamber 9119 is only allowed to rotate in one direction, and the first ratchet unit 9114 is limited by the second ratchet unit 9123. The operation unit 912 is rotated in one direction, and the fixing cord 913 is wound around the operation unit 912 in a loop shape. To this end, one end of the fixing cord 913 has been completely fixed to the connector 910.

Illustrative examples of the operation of the connector 910 to adjust the state are shown. The operator continues to rotate the operation unit 912 until the second perforation 9122 corresponds to the second hole 9112 and the third hole 9113, passes the fixing string 913, the other end of which is not fixed, through the second hole 9112, continues deep into the second perforation 9122 and passes through the third hole 9113. The toggle piece 9129 is toggled, the second perforation 9122 and the second hole 9112 are misaligned with the third hole 9113, and the fixing string 913 that has been threaded pulls the rest into the second portion. At this time, both pieces of the fixing cord 913 are fixed by the connector 910. In other words, the securing cord 913 accommodates small surgical instruments by the size of the coil between the two ends secured by the connector 910. According to the placed surgical equipment with different sizes, the coil size can be adjusted by stirring the stirring sheet 9129. When further reduction of the loop is desired, the dial 9129 is further toggled to move more of the securing cord 913 through the second perforation 9122, thereby reducing the loop size.

It should be mentioned that when the size of the coil needs to be enlarged, an operator needs to control the extension rod 9116 to drive the first ratchet unit 9114 to rotate in the direction, and then the extension rod 9116 is clamped on the limiting member 9117. Finally, the first ratchet unit 9114 is kept in the hidden groove 9118, and at this time, the rotation of the operation unit 912 is not limited by the first ratchet unit 9114, and the operator can rotate the toggle piece 9129 in the opposite direction to return the fixing cord 913 along the original path, so that the length of the coil between the two fixed sections is increased, but the stable fixing of the two ends is still ensured. To this end, the operator can reversibly adjust the connector 910 to adjust the coil size to fit different surgical instruments.

Referring to fig. 6-7, a schematic diagram of the headgear with adjustable length connectors according to a second preferred embodiment of the present invention is shown, and the main variation from the above embodiment is the connector 910A. The connector 910A includes a housing 911A, an operation unit 912A, and a fixing cord 913. The housing 911A is adapted to cooperate with the operating unit 912A to fixedly and adjustably position the securing cord 913 between the housing 911A and the operating unit 912A. Further, the connector 910A adjustably controls the length of the coil fixed between the housing 911A and the operation unit 912A at both ends of the fixing cord 913.

Unlike the above-described embodiment, the operation unit 912A includes a second ratchet unit 9123A, and the shape of the second ratchet unit 9123A is changed compared to the above-described embodiment. Specifically, the shape of the second ratchet unit 9123A is a regular symmetrical pattern, and a smooth vertical line is formed between the tooth tip and the tooth bottom, instead of bending a curve having a radian. That is, the second ratchet unit 9123A can complete the forward and reverse rotation in cooperation with the housing 911A. In other words, the second ratchet unit 9123A is reversibly rotatable within the working chamber 9119 of the housing 911A.

The housing 911A includes a pair of first ratchet units 9114A, and the number of the first ratchet units 9114A is at least two. The first ratchet units 9114A are respectively located at two sides of the housing 911A, and specifically, each of the first ratchet units 9114A is located at two sides of the housing 911A to control the unidirectional rotation of the operation unit 912A. The first ratchet unit 9114A is rotatably fixed within the working chamber 9119. When the first ratchet unit 9114A on one side is located in the working chamber 9119, the operating unit 912A rotates irreversibly in the working chamber 9119; when the first ratchet unit 9114A on the other side is located in the working chamber 9119, the operating unit 14A irreversibly rotates in the reverse direction in the working chamber 9119. The first ratchet unit 9114A controls irreversible rotation of the operation unit 912A in both directions, respectively. That is, only one of the first ratchet units 9114A is located in the working chamber 9119 at a time.

The first ratchet unit 9114A is reversibly located on the outer wall of the housing 911A, and in detail, the housing 911A has a reserved groove 9115A. The reserved groove 9115A communicates with the outside and the working chamber 9119. That is, the reserved groove 9115A allows the first ratchet unit 9114A to pass through. The number of the reserved slots 9115A is two, specifically, the reserved slots 9115A are distributed on two sides of the housing 911A.

The housing 911A further includes a limiting member 9117A, the limiting member 9117 is adapted to be located in the preformed groove 9115A, and the number of the limiting members 9117 is two. The position-limiting member 9117 is adapted to switch positions of the working chamber 9119 and the outer portion through the preformed groove 9115, so as to control the forward and backward rotation of the operation unit 912A, respectively. Only one of the limiting members 9117A is located in the working cavity 9119 at the same time, and the other limiting member 9117A is located outside the housing 911A. When the limiting members 9117A are all in the working chambers 9119, the operating unit 912A is limited to one position, and the operating unit 912A cannot move at all.

Further, the limiting member 9117A comprises a rotating member 91171A and an elastic member 91172A, and the rotating member 91171A is connected to the elastic member 91172A. The rotating member 91171A is connected to the outer wall of the housing 911A in a reversible manner, that is, the rotating member 91171A passes through the preformed groove 9115A in a reversible manner. One end of the elastic piece 91172A is connected to the first ratchet unit 9114A, and the other end is connected to the rotating piece 91171A. That is, the first ratchet unit 9114A is movably connected to the rotating member 91171A through the elastic member 91172A. Rotation of the operating unit 912A within the working chamber 9119 is only achieved when the first ratchet unit 9114A is movably located within the working chamber 9119.

When the second ratchet unit 9123A rotates in the working cavity 9119, the first ratchet unit 9114A connected with the limiting member 9117A on one side limits the rotation in one direction. By the operation method of fixing the fixing cord 913 of the above embodiment, the fixing cord 913 is fixed between the housing 911A and the operation unit 912A, the fixing of the fixing cord 913 is achieved by rotating the operation unit 912A in one direction, and the change in the size of the coil in the middle of the fixing cord 913 is achieved by rotating a certain angle.

When the coil size of the fixing rope 913 needs to be adjusted, the limiting members 9117A on two sides are only needed to drive the first ratchet wheel unit 9114A to be separated from the working cavity 9119, so that the unhindered rotation of the second ratchet wheel unit 9123A can be realized. At this time, the operator reversibly adjusts the coil size of the fixing string 913.

Fig. 8 to 14 are schematic views of a third headgear with length adjustable connectors according to the present invention, the headgear with length adjustable connectors includes a connector 10 and a headgear 20, the connector 10 is adapted to be mounted on the headgear 20 for fixing a small surgical instrument, and together with the headgear 20, the connector assists an operator in performing an intracranial operation.

The head frame 20 is suitable for fixing the head of a patient when performing an intracranial operation, so as to expose a better surgical field of view and facilitate the operator to perform the intracranial operation better and more accurately, and the connector 10 is suitable for fixing a small surgical instrument so as to facilitate the operator to take the surgical instrument better when performing the operation, so that the operator can complete the intracranial operation more quickly and shorten the operation time.

The head frame 20 comprises a base 21, a rotating shaft 22 and a head clamp 23, the head frame 20 is suitable for being fixed on the operation table surface through the base 21, one end of the rotating shaft 22 is connected to the base 21, and the other end is connected to the head clamp 23. The head clamp 23 is suitable for fixing the head of a patient during operation so as to select a better operation position, and meanwhile, the rotating shaft 22 is rotatably connected to the head clamp 23, so that the head clamp 23 can be adjusted in direction and position through the rotating shaft 22, and the rotating shaft 22 enables the head clamp 23 to better fix the head of the patient.

Besides, the head frame 20 further comprises a retraction system 24 and a guide adapter 25, wherein the retraction system 24 and the guide adapter 25 are both mounted on the head clamp 23, and the retraction system 24 is suitable for retracting body tissues of a patient when an operator performs intracranial surgery so as to better expose a surgical field and provide a larger operation space for the operator. The guide adapter 25 is mounted to the headgear 23, adapted to mount the connector 10, in other words, the connector 10 is adapted to be mounted to the headgear 20 via the guide adapter 25.

The head clamp 23 includes a left clamp arm 231, a right clamp arm 232 and a head nail 233, the left clamp arm 231 and the right clamp arm 232 are both C-shaped, one end of the left clamp arm 231 and one end of the right clamp arm 232 are adjustably connected to the rotating shaft 22, and the other end of the left clamp arm 231 and the other end of the right clamp arm are respectively connected to the head nail 233. One end of the left clamping arm 231 and one end of the right clamping arm 232 are adjustably connected to the rotating shaft 22, so that the head clamp 23 can not only adjust and fix the position and the direction of the head of the patient, but also adjust the left clamping arm 231 and the right clamping arm 232 according to the head shape and the size of the head of the patient, thereby controlling the tightness of the head clamp 23, and better fixing the head of the patient, so as to facilitate the operation of an operator.

The retracting system 24 includes a pair of flexible shaft retractors 241 and an extension arm 242, one end of the extension arm 242 is connected to the head clamp 23, and the other end is used for mounting the flexible shaft retractors 241. When in use, the pair of flexible shaft retractors 241 are respectively arranged at two ends of the extension arm 242, so that the pair of flexible shaft retractors 241 are respectively positioned at two sides of the head of a patient, and are used for retracting scalp tissues of the patient from two sides of the head of the patient after the scalp of the patient is cut open in an operation, thereby providing a good visual field and an operation space for an operator to perform the operation.

The guide adapter 25 includes a supporting rod 251 and an adapting member 252, one end of the supporting rod 251 is fixed to the head clamp 23, and the other end is connected to the adapting member 252, in other words, the adapting member 252 is adapted to be mounted to the head clamp 23 through the supporting rod 251. And the guide adapter 25 is adapted to mount the connector 10, in other words, the connector 10 is adapted to be mounted to the headgear 20 by the adapter 252 of the guide adapter 25.

The connector 10 includes a sheath body 11, an inner core body 12, a reversible structure 13 and a fixing rope body 14, wherein the sheath body 11 is adapted to be sleeved on one end of the inner core body 12, the reversible structure 13 is adapted to be mounted on the inner core body 12, the fixing rope body 14 is mounted on the sheath body 11 and connected to the inner core body 12, and the fixing rope body 14 is adapted to be contracted by the rotation fit of the sheath body 11 and the inner core body 12, so as to fix the small medical device to the connector 10.

The relative rotation of the core body 12 and the sheath body 11 of the prior art connector is not reversible, in other words, the rotation of the sheath body 11 and the core body 12 of the prior art connector is unidirectional, and only can be shrunk and fixed, and after the fixation, the relative rotation cannot be loosened, so that a plurality of disadvantages are caused. The connector 10 with the headgear having the length-adjustable connector has the reversible structure 13, so that the rotation of the outer sheath body 11 and the inner core body 12 is reversible in use, and can be released after being fixed, thereby reducing many disadvantages, facilitating the use of the instrument during surgery, and reducing the use cost of the connector 10.

The jacket main body 11 is preferably cylindrical, the shape of the jacket main body 11 is not limited by the present invention, and the top of the jacket main body 11 has an opening extending toward the inside of the jacket main body 11 to form an inner core receiving cavity 111, and the inner core receiving cavity 111 is adapted to receive the inner core main body 12.

The outer wall of the jacket main body 11 further has a first fixing hole 112, a second fixing hole 113 and a third fixing hole 114, the first fixing hole 112 and the second fixing hole 113 are located on the same side of the outer wall of the jacket main body 11, the third fixing hole 114 is located on the other side of the outer wall of the jacket main body 11, in other words, the third fixing hole 114 is located at a position opposite to the first fixing hole 112 and the second fixing hole 113 on the same outer wall. And the third fixing holes 114 and the first fixing holes 112 are located on the same horizontal axis, and the first fixing holes 112 and the third fixing holes 114 are distributed in mirror symmetry with the central axis of the jacket main body 11.

The first fixing holes 112, the second fixing holes 113, and the third fixing holes 114 are provided at intervals in the outer wall of the jacket main body 11, and extend from the outer wall surface into the core-accommodating chamber 111, penetrating through the outer wall.

The inner wall of the sheath main body 11 has a mounting groove at a position of the core accommodating chamber 111 near the opening, the mounting groove being adapted to hold the core main body 12 in the core accommodating chamber 111.

The inner wall of the outer sleeve main body 11 is further provided with a plurality of clamping grooves 115, the clamping grooves 115 are suitable for limiting and fixing the inner core main body 12 when rotating relative to the outer sleeve main body 11, and the clamping grooves 115 are suitable for keeping the inner core main body 12 at a certain rotating position in a clamping connection mode when the inner core main body 12 rotates, so that the inner core main body 12 is fixed after rotating. The inner core main body 12 is matched with the outer sleeve main body 11, and the fixing rope main body 14 is contracted in a rotating and fixing mode, so that the small medical device is fixed.

The outer wall of the outer sleeve main body 11 is further provided with an anti-slip surface, the anti-slip surface protrudes out of the outer wall of the outer sleeve main body 11, the outer wall is suitable for being held by a user, and the connector 10 is prevented from slipping when the user uses the connector, the inner core main body 12 cannot be rotated, and fixation cannot be achieved.

The core main body 12 includes a fixing member 121 and a holding member 122, one end of the fixing member 121 is integrally connected to the holding member 122, and the other end is accommodated and held in the core accommodating cavity 111 of the sheath main body 11.

The fixing member 121 is preferably formed by two halves, and a position of a side end of the fixing member 121 near the bottom of the fixing member 121 is provided with a second fixing groove 1214, the second fixing groove 1214 perpendicularly extends from a side end surface of the fixing member 121 to the inside of the fixing member 121, so that the second fixing groove 1214 is recessed in the side end surface of the fixing member 121, and the second fixing groove 1214 surrounds the side end of the fixing member 121. The second fixing groove 1214 is adapted to receive the fixing string main body 14 when the core main body 12 rotates with respect to the jacket main body 11.

The fixing element 121 further has a second inner hole 1212, the second inner hole 1212 is located at the bottom of the second fixing groove 1214, the second inner hole 1212 extends perpendicularly from the bottom of the second fixing groove 1214 to the inside of the fixing element 121 so as to transversely penetrate through the fixing element 121, and the second inner hole 1212 is adapted to allow the fixing rope body 14 to pass through.

The side end of the fixing member 121 has a first fixing groove 1213, the first fixing groove 1213 is located at a position close to the top of the fixing member 121, the first fixing groove 1213 extends perpendicularly from the side end surface of the fixing member 121 to the inside of the fixing member 121, so that the first fixing groove 1213 is recessed in the side end surface of the fixing member 121, and the first fixing groove 1213 surrounds the side end of the fixing member 121. The first fixing groove 1213 is adapted to receive the fixing cord main body 14 when the core main body 12 is rotated with respect to the sheath main body 11.

The side end of the fixing element 121 further has a first inner hole 1211, the first inner hole 1211 is located at the bottom of the first fixing groove 1213, the first inner hole 1211 extends perpendicularly from the bottom of the first fixing groove 1213 to the inside of the fixing element 121 so as to transversely penetrate through the fixing element 121, and the first inner hole 1211 is adapted to pass through the fixing rope body 14.

When the inner core body 12 is installed in the inner core accommodating cavity 111 of the sheath body 11, the first inner hole 1211 is adapted to be located on the same horizontal axis as the first fixing hole 112 and the third fixing hole 114, and the second inner hole 1212 is adapted to be located on the same horizontal axis as the second fixing hole 113, so that the fixing cord body 14 can pass through the inner core body 12 and the sheath body 11, and the fixing cord body 14 is tightened by the relative rotation of the inner core body 12 and the sheath body 11, thereby achieving the fixing effect.

The side end of the fixing member 121 has a mounting hole 1216, the mounting hole 1216 is located at an opposite upper end of the first fixing groove 1213, the mounting hole 1216 is located closer to the top of the fixing member 121 than the first fixing groove 1213, and the mounting hole 1216 extends from the side end surface of the fixing member 121, and extends transversely through the fixing member 121.

The interior of the anchor 121 also has a second traction lumen 1215, the second traction lumen 1215 communicating with the first traction lumen 1222, the second traction lumen 1215 being adapted to receive the reversible structure 13.

The grip 122 is preferably made of two halves, and the grip 122 is integrally connected to the top of the fixing member 121, and the grip 122 has a first pulling cavity 1222 therein, the first pulling cavity 1222 is communicated with the second pulling cavity 1215, and the first pulling cavity 1222 is suitable for mounting the reversible structure 13.

One end of the grip 122 is connected to the fixing member 121, and the other end of the grip 122 has a control member mounting hole 1221, and the control member mounting hole 1221 extends perpendicularly from the end plane of the grip 122 to the inside of the grip 122 so as to communicate with the first traction chamber 1222. The control member mounting hole 1221 has a plurality of recesses at its periphery, which are recessed in the end plane of the grip 122 and adapted to cooperate with the control member mounting hole 1221 for mounting the reversible structure 13.

The reversible structure 13 includes a control member 131, a connecting unit 132, an engaging member 133 and an elastic element 134, wherein one end of the connecting unit 132 is connected to the control member 131, and the other end is connected to the engaging member 133, and the connecting unit 132 is controlled to move by rotating the control member 131, so as to drive the engaging member 133 to move, and thus, the engaging and disengaging of the engaging member 133 are realized.

The control member 131 is rotatably mounted to the holding member 122 through the control member mounting hole 1221 at the top of the holding member 122, the control member 131 includes a head portion and a tail portion, the control member 131 is mounted to the holding member 122 through the tail portion, and the tail portion is further connected to the connecting unit 132, when the control member 131 rotates, the connecting unit 132 winds around the head portion and the tail portion, so as to retract the connecting unit 132. The head of the control member 131 has a protruding portion, the protruding portion is located at one end of the head close to the tail, the protruding portion is suitable for being accommodated in the recessed portion of the holding member 122, and the control member 131 is suitable for being fixed after being rotated by being clamped in the recessed portion through the protruding portion.

The engaging member 133 is mounted to the fixing member 121 through the mounting hole 1216 and the second drawing cavity 1215, the engaging member 133 is preferably "convex", the top of the "convex" shape of the engaging member 133 protrudes from the side end surface of the fixing member 121 through the mounting hole 1216, and the engaging member 133 is adapted to be received in the engaging groove 115 of the jacket main body 11 after protruding from the side end surface of the fixing member 121, and adapted to hold the fixing member 121 in a rotated position after the fixing member 121 is rotated.

The "convex" bottom of the catch 133 is larger in diameter than the mounting hole 1216 so that the "convex" bottom of the catch 133 is located in the second traction chamber 1215. The convex bottom of the engaging member 133 has an elastic member receiving cavity, one end of the elastic member 134 is connected to the control member through the elastic member receiving cavity, and the other end is connected to the inner wall of the second traction cavity 1215. The elastic element 134 is adapted to enable the compressed engaging member 133 to rebound when the fixing member 121 rotates.

One end of the connection unit 132 is connected to the control member 131, and the other end is connected to the "convex" bottom of the engaging member 133 after passing through the first traction chamber 1222 and the second traction chamber 1215.

When the fixing rope main body 14 includes a head end and a tail end, in use, the head end or the tail end of the fixing rope main body 14 is inserted into the sheath main body 11 through the second fixing hole 112, enters the fixing member 121 through the second inner hole 1212, and rotates the fixing member 121 forward, so that the fixing rope main body 14 is wound in the second fixing groove 1214, and after the winding is completed, the other end of the fixing rope main body 14 enters the sheath main body 11 through the first fixing hole 112, enters the fixing member 121 through the first inner hole 1211, and passes through the third fixing hole 112 after passing through the first inner hole 1211, and rotates the fixing member 121 forward, so that the other end of the fixing rope main body 14 is wound in the first fixing groove 1214, at this time, the fixing rope main body 14 and the sidewall of the sheath main body 11 form a retractable loop-shaped structure, a medical instrument is placed in the retractable loop-shaped structure, the fixing member 121 is rotated, so that the fixing rope main body 14 is continuously retracted to fix the instrument, and because the engaging member 133 is engaged with the fixing member 115, the fixing device is rotated, so that the fixing device 10 can be rotated.

When the engaging member 133 is received in the slot 115, the medical device is fixed, and when the fixed medical device needs to be loosened, the control member 131 is reversely rotated to drive the connecting unit 132 to move, so that one end of the connecting unit 132 is wound around the tail portion, the connecting unit 132 is contracted to drive the engaging member 133 to move towards the second traction cavity 1215 inside the fixing member 121, so that the engaging member 133 is separated from the slot 115, so that the fixing member 121 can be rotated randomly, when the fixing member is reversely rotated, the fixing rope body 14 is loosened to loosen the fixed medical device, and after the control member 131 is rotated, the protruding portion of the control member 131 is engaged with the recessed portion of the holding member 122, so that the medical device is fixed after being reversely rotated.

Fig. 15-16 are schematic views of a fourth headgear with length adjustable connectors according to the present invention, the headgear with length adjustable connectors includes a connector 10A and a headgear 20A, the connector 10A is adapted to be mounted on the headgear 20A for holding small surgical instruments, and together with the headgear 20A, the connector assists an operator in performing intracranial surgery.

The headgear with length adjustable connectors in the third embodiment and the headgear with length adjustable connectors in the fourth embodiment are similar in structure, and the headgear clip 20A is identical in structure, the only difference being the reversible structure 13A of the connector 10A.

The core main body 12A in the fourth embodiment includes a fixing member 121A and a holding member 122A, one end of the fixing member 121A is integrally connected to the holding member 122A, and the other end is accommodated and held in the core accommodating cavity 111A of the sheath main body 11A.

The fixing member 121A is preferably formed by two halves, and a position of a side end of the fixing member 121A near the bottom of the fixing member 121A is provided with a second fixing groove 1214A, the second fixing groove 1214A extends perpendicularly from a side end surface of the fixing member 121A to the inside of the fixing member 121A, so that the second fixing groove 1214A is recessed in the side end surface of the fixing member 121A, and the second fixing groove 1214A surrounds the side end of the fixing member 121A. The second fixing groove 1214A is adapted to receive the fixing string main body 14A when the core main body 12A rotates with respect to the jacket main body 11A.

The bottom of the second fixing groove 1214A further has a second inner hole 1212A, the second inner hole 1212A extends perpendicularly from the bottom of the second fixing groove 1214A toward the inside of the fixing element 121A so as to transversely penetrate through the fixing element 121A, and the second inner hole 1212A is adapted to pass through the fixing string main body 14A.

The side end of the fixing member 121A, near the top of the fixing member 121A, has a first fixing groove 1213A, and the first fixing groove 1213A extends perpendicularly from the side end surface of the fixing member 121A to the inside of the fixing member 121A, so that the first fixing groove 1213A is recessed in the side end surface of the fixing member 121A, and the first fixing groove 1213A surrounds the side end of the fixing member 121A. The second fixing groove 1213A is adapted to receive the fixing cord main body 14A when the core main body 12A rotates relative to the sheath main body 11A.

The bottom of the first fixing groove 1213A further has a first inner hole 1211A, the first inner hole 1211A extends vertically from the bottom of the first fixing groove 1213A to the inside of the fixing member 121A to transversely penetrate through the fixing member 121A, and the first inner hole 1211A is adapted to pass through the fixing rope body 14A.

When the inner core main body 12A is installed in the inner core accommodating cavity 111A of the sheath main body 11A, the first inner hole 1211A is adapted to be located on the same horizontal axis as the first fixing hole 112A and the third fixing hole 114A, and the second inner hole 1212A is adapted to be located on the same horizontal axis as the second fixing hole 113A, so that the fixing cord main body 14A can pass through the inner core main body 12A and the sheath main body 11A, and the fixing cord main body 14A is tightened by the relative rotation of the inner core main body 12A and the sheath main body 11A.

The side end of the fixing member 121A has a mounting hole 1216A, the mounting hole 1216A is located at an opposite upper end of the first fixing groove 1213A, the mounting hole 1216A is located closer to the top of the fixing member 121A than the first fixing groove 1213A, and the mounting hole 1216A extends from the side end surface of the fixing member 121A, and transversely penetrates the fixing member 121A.

The interior of the fixture 121A also has a second traction lumen 1215A, the second traction lumen 1215A communicating with the mounting aperture 1216A, the second traction lumen 1215A being adapted to receive the reversible structure 13A.

The grip 122A is preferably formed by two halves, and the grip 122A is integrally connected to the top of the fixing member 121, and the grip 122A has a first pulling cavity 1222A therein, the first pulling cavity 1222A is communicated with the second pulling cavity 1215A, and the first pulling cavity 1222A is adapted to mount the reversible structure 13A.

Two side ends of the grip 122A are respectively provided with a control member mounting hole 1221A, and the control member mounting holes 1221A vertically extend from two side end planes of the grip 122A to the inside of the grip 122A so as to be communicated with the first traction cavity 1222A.

The reversible structure 13A includes a control member 131A, a locking member 133A, an elastic element 134A and a connecting unit 132A, one end of the connecting unit 132A is connected to the locking member 133A, the other end is connected to the holding member 122A through the internal structure of the second traction cavity 1215A, and the middle position of the connecting unit 132A is connected to the control member 131A and the elastic element 134A, respectively, the connecting positions of the control member 131A and the elastic element 134A are located at two side ends of the middle portion of the connecting unit 132A, respectively, one end of the elastic element 134A is connected to the middle portion of the connecting unit 132A, and the other end is connected to the inner wall of the first traction cavity 1222A, in use, by pressing the control member 135A, the connecting unit 132A drives the locking member 133A to move into the second traction cavity, so that the locking member 133A is separated from the slot 115A, further the fixing member 121A loses its fixing effect, and can rotate freely, and when the rotation is completed, the control member 131A is released, the elastic element 134A drives the connecting unit 133A to drive the locking member 133A to move back to the mounting hole 133A, so that the fixing member can be restored to the mounting hole 1216.

While the invention has been described in further detail in connection with specific preferred embodiments thereof, and while the objects of the invention have been fully and effectively achieved, it will be understood by those skilled in the art that the examples of the invention set forth above and illustrated in the accompanying drawings are illustrative only and not limiting of the invention. For those skilled in the art to which the invention pertains, numerous and varied simplifications or substitutions may be made without departing from the invention, which shall be deemed to fall within the scope of the claims set out below.

Claims

1. A headgear with a length adjustable connector comprising:

2. A headgear with length adjustable connector according to claim 1 wherein said core body comprises a fixing member and a grip member, said fixing member being integrally connected to said grip member.

3. A headgear with a length adjustable connector according to claim 2 wherein said outer sheath body has a core-receiving cavity, said anchor of said core body being adapted to be received in said outer sheath body through said outer sheath core-receiving cavity.

4. The headgear with length adjustable connector of claim 3, wherein the cover body has a first fixing hole, a second fixing hole and a third fixing hole, the first fixing hole, the second fixing hole and the third fixing hole are located at side ends of the cover body, and the first fixing hole and the second fixing hole are located at one side of the cover body, the third fixing hole is located at the other side of the cover body, and the first fixing hole and the third fixing hole are located on the same axis.

5. The headgear with an adjustable length connector according to claim 4, wherein the anchor has a first and a second fixation slots at lateral ends thereof recessed in the anchor lateral end surface, and the anchor further has a first and a second inner hole at bottoms thereof, respectively, the first and second inner holes extending transversely through the anchor, the first and the third fixation holes being co-axial, the second and the second fixation holes being co-axial, wherein one end of the fixation cord body is adapted to pass through the first, the first and the third fixation holes, respectively, and the other end is adapted to pass through the second and the second fixation holes, respectively, such that when the inner core rotates relative to the outer sheath body, both ends of the fixation cord body are secured to the first and the second fixation slots, respectively, to thereby fix the length of the outer sheath body to the medical device.

6. The headgear with length adjustable connector of claim 5, wherein the shell body has a slot in an inner wall of the shell body, the slot being recessed in the inner wall of the shell body and communicating with the inner core receiving cavity.

7. A headgear with length adjustable connector according to claim 6 wherein said reversible structure comprises a control member and a connecting unit, said control member being mounted to said grip member, said catch member being mounted to said mount member, said catch member being adapted to engage with said slot of said cover body to effect securement.

8. The headgear with a length adjustable connector according to claim 7, wherein the reversible structure further comprises a connecting unit, one end of the connecting unit is connected to the engaging member, and the other end is connected to the control member, and the connecting unit is adapted to control the control member to move so as to drive the engaging member to move by the connecting unit connected to the control member, thereby engaging and disengaging the engaging member with and from the slot, and thereby realizing the reversible rotation of the core body.

9. A headgear with length adjustable connectors according to claim 8 wherein said reversible structure further comprises a resilient element connected at one end to said catch or connection unit and at the other end to said core body.

10. A headgear with a length adjustable connector according to claim 9 wherein said anchor further has a mounting hole through which said catch is adapted to be mounted to said anchor.

11. A headgear with a length adjustable connector comprising:

12. A headgear with length adjustable connector according to claim 1 wherein said housing has a hidden slot between an inner wall and an outer wall of said housing, said first ratchet unit adapted to be received in said hidden slot, said second ratchet unit in said working chamber being bi-directionally rotatable, and a plurality of extension rods connected at one end to said first ratchet unit and extending at the other end out of the upper end of said housing.

13. A headgear with length adjustable connector according to claim 2 wherein said housing includes a plurality of retaining members and has a plurality of pre-grooves, said extension rod being adapted to be engaged by said retaining members, said retaining members being located in said hidden grooves, said pre-grooves being located on an inner wall of said housing, said first ratchet unit being adapted to pass through said pre-grooves, said pre-grooves communicating said working chamber and said hidden grooves.

14. A headgear with an adjustable length connector according to claim 3 wherein said operation unit has a take-up slot, one end of said fixing cord is adapted to be wound around said take-up slot, the other end is adapted to pass through said operation unit, and the size of the coil is adjusted by rotation of said operation unit.

15. A headgear with length adjustable connector according to claim 1 wherein said housing includes a pair of stops and has a plurality of pre-grooves communicating said working chamber and exterior, said first ratchet unit being adapted to pass through said pre-grooves, said stops being adapted to pass through said pre-grooves to snap said first ratchet unit to said second ratchet unit to limit rotation of said operating unit.