KR910000762B1 - Hanger for drainage device - Google Patents

Abstract

The present invention relates to a housing support device for a bodily fluid ejection device, to which the housing support device is formed, which has at least one wall and has a bracket having a strut member which can be arranged on the housing and extends from the first storage position. A hook member having one end rotatably fixed relative to the strut member for selective rotational movement to a two-suspended position, the other end of the hook member being shaped to engage the support and the hook One end of the member and the bracket are shaped and dimensioned such that the hook member holds the lock in the suspended position.

Description

Housing support device for body fluid drainage device

1 is a perspective view of a chest ejection device according to the present invention in a suspended position.

FIG. 2 is a plan view of the discharge device of FIG. 1 showing an inlet port to the collection chamber and the suction control chamber. FIG.

3 is an enlarged view of a portion of the bottom of the first degree exhaust device prior to attachment of the floor stand.

4 is a plan view of a cross section of the discharge device of FIG.

5 is a cutaway plan view of another embodiment of the discharge device of the present invention.

6 is a first side cross-sectional view of the collection chamber taken along line 6-6 of FIG.

7 is a second side cross-sectional view of the collection chamber taken along line 7-7 of FIG.

FIG. 8 is a first side cross sectional view of the small arm compartment of a sealed chamber taken along line 8-8 of FIG.

8A shows another embodiment of a check valve for drying operation of a sealed chamber, and an enlarged side cross-sectional view of the small arm compartment of the sealed chamber taken along FIG. 4 and line 8-8.

9 is a side cross-sectional view of one compartment of the suction control room taken along line 9-9 of FIG.

FIG. 10 is a cross-sectional side view of the second compartment of the suction control room taken along line 10-10 of FIG.

11 is a sectional view taken along line 11-11 of FIG.

12 is a cross-sectional view taken along the line 12-12 of FIG.

FIG. 13 is an enlarged view of the poppet valve and dash port in the suction control room taken along line 13-13 of FIG.

14 is an exploded view of an injection / sampling device according to the present invention.

FIG. 15 is a plan view of the injection / sampling device of FIG.

FIG. 16 is a side cross-sectional view taken along line 16-16 of FIG. 15 showing the tube under compression;

17 is a partially enlarged perspective view of the first FIG. Hanger.

18 is a partially enlarged perspective view of another embodiment of the hanger of the present invention.

19 is a perspective view of a chest ejection device in a suspended position with an autotransfusion device attached to its side.

* Explanation of symbols for main parts of the drawings

10,10 ': chest discharge device 12: collection chamber

14 seal room 16 suction control room

18,20,22,24: collection compartment

26,28,30,32,34.44,47,66,68: Wall 27: Marine Zone

36: inlet port 38: upper wall

42: small arm compartment 46: large arm compartment

48: plate member 48 ': air flow meter

50: float floating valve 51: check valve

52: opening 54: opening

56: notch 58: upper compartment

59: separation chamber 60: suction inlet port

61: inclined lower surface 62: constant pressure relief valve

63: wall 63 ': valve member

64: first compartment 67: second compartment

72: anhydrous suction regulator 74: opening

76 valve plate 78 opening

80: plate member 82: coil spring

84: load 86: dash port

86 ': color 94: glass annular portion

96: round bead 98: worm gear

100: pinion gear 104: disk (dial)

106: lever arm 106 ': detent member

108: upper arm 110: front wall

112: rear wall 114: bottom wall

116: bracket 118: hanger device

120: support rod 122: floor support stand

124: color divider 125: handle

130: graduation 132: transparent part

134: graduation 136: transparent

138: grommet 140: grommet

144: tube 146: latex tube

148: transparent part 150, 152: transparent part

154: display unit 160: upper compression plate

162: lower compression plate 164: flange

166 window 168170

172: floating member 174: restricted area

176,178: support member 180: passage

182: wall member 184,186: deflection plate

190,192,194: wall member 200: lower leg

202: bag 204,206: tube

272,274 opposing wall 273 common sidewall

276: holding member 278: hook member

279: holding shoulder 280: bracket member

282: wall 264: holding member

286 hook member 288 bending portion

292: wall 294: hook bracket

296: wire frame 298: eye shape

The present invention relates to a body fluid dispensing apparatus, and more particularly to a hanger support for a suction discharge system and a drainage system. The drainage device removes gas and liquid by pressure differential from the patient for example chest cavity.

For many years, the standard apparatus for performing pleural cavity removal has been a drainage system known as a "three bottle setup" which includes a collection bottle, a water seal bottle and a suction control bottle. The catheter passes from the pleural cavity of the patient to the collection bottle, which is connected to the aspiration source by a tube. The three bottles are connected in series by several tubes, applying suction to the pleural cavity to extract liquid and air, which is then discharged into the collection bottle. The gas entering the collection bottle creates bubbles through the water in the water seal bottle. Water in a water seal bottle usually prevents backflow of air into the chest cavity.

Aspiration pressure is typically provided by a central vacuum supply in a hospital to allow the discharge of liquids, water and gases, such as blood, from the pleural cavity of the patient by setting the pressure difference between the suction source and the patient's internal pressure. Such suction pressures and pressure differentials must be maintained precisely because of the dangerous conditions that can arise if an unreasonably high or low pressure differential occurs. However, the suction source of a hospital typically can change over time, degrading its suction performance. In addition, the discharge system associated with a water-filled manometer in a suction control chamber whose level is intended to indicate liquid pressure is inconvenient due to its size and weight as well as the need to add water before use. In addition, evaporation in the suction control chamber results in suction pressure fluctuations that must be corrected with the addition of more water, thus increasing the adjustment and maintenance of the time required in the use of such an exhaust system. In addition, the bottles were typically placed on a support, such as a table or floor, and then spilled, causing the tube to be accidentally pulled out.

The three-bottle set-up also has several defects caused by many discrete components and multiple connections (typically 16 or 17), such as pneumothorax, which can be caused by the loss of water in the water seal bottle if suction is temporarily blocked. There is a build up of static pressure, which can cause tension pneumothorax and shock membrane metastasis. Another disadvantage of a three-pack set-up is the time required to set up the system to coordinate its work and the possibility of incorrect connections.

The three-bottle set-up lost its value with the introduction of a submersible sealed drainage system marketed under the trade name "Pleur-evac" in 1966 by DeknaTel Incorporated. The title of "Physiology of the Thoracic and Pleural Catheter, Thoracic Exhaust System No. 1 in Decartel's Series", which is completely related to this, is disclosed in the publication on "Pleur-evsc" by Decnatel Incorporated). US Pat. It is aimed at the Pleur-evac system. These improvements included the elimination of variations in the three bottle setups that existed between different manufacturers, hospitals, and hospital laboratories. Such variations include bottle size, tube length and diameter, stopper material, and the like. Among the features of the Pleur-evac system that provides the improved performance is the adoption of three bottle technologies in a single preformed self-contained unit. The required suction value is usually set by the water level in the suction control bottle and the water sealing bottle. This level is met according to special values before application of the system to the patient. Included are special valves called "high negative pressure valves" which are employed when the negative pressure of the patient is sufficient to threaten the loss of the water seal. In addition, the "static pressure release valve" in the large arm of the water seal chamber acts to prevent tension pneumothorax when the pressure in the large arm of the water seal exceeds the specified value due to inability to suction the suction tube, accidental clamping or blockage. The Pleur-evac system is disposable and helps to control cross-infection in combat.

Despite the benefits of the Pleur-evac system for three-bottle set-ups and the general recognition of the device in the medical community, there remains a continuing need to improve the convenience and performance of chest discharge systems and to mold such systems. As mentioned above, the liquid filling the suction control chamber needs to fill the pressure gauge tube to the level specified by the physician before being connected to the patient and the hospital suction system. Although it can be thought that such filling is performed at manufacturing capacity before shipping, this is not practical because it requires frequent adjustments to other values of patient aspiration as directed by the attending physician. In addition, the presence of fluids in various tubes can damage the system during shipment due to freezing temperatures or due to leakage. Moreover, the suction level obtained by the chest discharge system is somewhat limited by the size of the pressure gauge tube required to maintain such a suction level.

At high levels of suction, the size of the pressure gauge required makes the discharge system impractical in some circumstances. The reduction in size of the system will provide advantages such as ease of use, ease of storage, cheap shipping costs, and reduced impairments between patients, visitors and medical personnel. In addition, the accuracy of the present submersible exhaust system is limited in that the various manometers employed must be constantly adjusted visually by observing the liquid level in each room. Even when the gauge is used it must be adjusted constantly. In either case, when the fluid in the pressure gauge evaporates, a suction change occurs that requires the addition of more water to compensate for the loss. All activities in such a process take time.

Pleur-evac is equipped with a hanger hook, for example to support the device from a hospital bed. However, the hook can be easily removed from the device and still allow the movement of the Pleur-evac from its support by inadvertent bumps or the like.

Despite the benefits of the Pleur-evac system for three-bottle set-ups and the general recognition of the device in the medical community, there remains a continuing need to improve the convenience and performance of chest discharge systems and to miniaturize such systems.

We have invented an improved discharge device and a hanger means for the discharge device that are additionally improved over the current devices.

The present invention includes a collection chamber including a liquid inlet for collecting liquid and a first inlet connected to a suction source while being in fluid communication with the collection chamber to control the degree of vacuum applied to the collection chamber, and a second inlet communicating with the outside air. For example, anhydrous means placed between the suction inlet and the outside air inlet, controlling the degree of aspiration imposed by the collection chamber at a number of predetermined suction set-up levels, the control means and the suction inlet to provide immediate confirmation of the proper operation of the suction in the collection chamber. The drainage apparatus provided with the suction control chamber containing the indication means arrange | positioned in between.

The regulating suction means are located in the suction control chamber with holes and are dimensioned and shaped so as to seal the hole, the member which divides it into a first part near the outside air inlet and the remaining second part near the suction inlet while in fluid communication with the collection chamber. A losing valve means, and a tensioning means for closing the suction of the collection chamber when the suction of the collection chamber is at the set level of suction and opening the valve means to return the suction in the collection chamber to the set level by opening the valve means to allow the outside air to flow to the second part. Include.

Preferably, the tensioning means comprises a spring which is under tension and is connected to the valve means at one end and to the support member in the first part at the other end, thereby sealing the valve means with holes and closing seals according to a predetermined set of suctions. Keep it in a relationship.

Also provided are means for adjusting the spring tension to a separate stage of the predetermined setting to provide a predetermined set of suction. Preferably the adjustment means comprises a worm gear disposed on at least a portion of the support member, a pinion gear rotatably supported while interlocking with the worm gear, a dial connected to the pinion gear and having a plurality of predetermined setting grooves along its circumference; It includes a detent member that is resiliently disposed about its circumference and is shaped and dimensioned to seat in one of the grooves and rides along its circumference until it seats in one of the next grooves upon rotation of the dial.

The device further comprises means for variably correcting the tension of the spring while the detent member is seated in one groove of the predetermined set groove of the dial so that the spring tension can be selectively changed without rotation of the dial. In one preferred embodiment, the tension correcting means comprises a collar rotatably disposed on the wall portion of the suction control chamber, supporting with the support member so that the tension of the spring during the rotation of the collar can be selectively changed while the dial is fixed. The other end of the member is fixed to the collar for its rotation. At least a portion of the dial extends from the outside air inlet so that the dial can be rotated from the outside of the suction control chamber. The dial is scaled to indicate the suction pressure imposed on the collection chamber while the detent member is seated in one of the grooves.

Preferably, the valve means is a flat plate having a circular bead on one side for seating with respect to the separating member and about the hole, providing a single point of contact in cross section between the bead and the separating plate. The hole is also larger in area than the minimum cross-sectional area of any passage in any chamber.

The apparatus also further comprises damping means connected to the valve means to relieve rapid movement of the valve means during opening and closing of the opening in response to suction fluctuations from the suction of a predetermined set level. The gramping means comprise a dash port operatively connected to the valve means. The spring is also disposed in said first portion near the outside air inlet, and the valve means and dash port are each disposed in the second portion.

In one preferred embodiment, the indicating means comprises a float arranged in the confined area of the second part of the suction control chamber, the confined area having a visible portion, the float being in the confinement when a predetermined set level of suction is obtained in the collection chamber. The shape and dimensions are determined to move the visible portion in the chamber, providing immediate desire confirmation of proper suction operation within the collection chamber. The restricted area is limited between the pair of stop members and restricts the movement of the float within the restricted area. Preferably the float is colored against its surroundings for easy viewing. The device float is fluorescent to provide immediate visual confirmation of proper aspiration operation, even under reduced light or night conditions.

In another embodiment, the indicating means is configured to provide an immediate desire and audible confirmation of proper suction operation within the collection chamber by allowing the outside air, which enters through the bubble tube zone, under the operating conditions to create bubbles towards the suction inlet, thereby providing a second part of the suction control room. And a visible bubble tube zone to maintain a predetermined amount of liquid within. The bubble tube zone includes a passage that bypasses the liquid retention zone. The passages are also dimensioned and shaped so that outside air does not generate bubbles through the liquid in the bubble tube region until the suction imposed in the collection chamber is at least above a predetermined set level of suction.

In another embodiment, the drainage device includes a sealed chamber that prevents passage of the atmosphere to the collection chamber.

The invention also relates to a device for regulating the degree of vacuum imposed in an exhaust system, comprising a housing defining a seal employed for fluid communication with the exhaust system, a first inlet in the housing for connection to a suction source, A second inlet in the housing for communication, an anhydrous means disposed between the suction inlet and the outside air inlet, adjusting the degree of suction at a plurality of predetermined suction set levels, the adjusting means and the suction inlet to provide immediate confirmation of proper operation of the suction. And indicating means disposed between. The regulating suction means is located in the suction control chamber with a hole and is dimensioned and shaped to seal the hole, a member which divides it into a first part near the outside inlet and the remaining second part near the suction inlet in fluid communication with the exhaust system. The suction in the discharge system is brought to a set level by tensioning the valve means to seal the aperture when the aspiration of the defined valve means and the discharge system is at the set level of suction, and unsealing the valve means so that outside air flows to the second part. Tensioning means for returning.

The present invention also provides a collection chamber including an inlet for collecting liquid from the body cavity and in fluid communication with the body cavity, a suction control chamber that regulates the degree of vacuum imposed on the collection chamber, and an end portion of the collection chamber while preventing the passage of outside air. A small arm compartment having a suction inlet, and a small arm compartment in communication with the collection chamber at one end and in communication with the other end of the large arm compartment at the other end, wherein the small arm compartment has a relatively small collection. It relates to a body fluid dispensing device that has a means near one end to prevent outside air from passing into the collection chamber when it has a high level of negative pressure. The outside air prevention means includes a first chamber whose dimensions and shape are defined and formed near the opening to include the entire volume of a predetermined amount of the sealing liquid disposed in the sealing chamber at the junction of the large arm compartment and the small arm compartment. The apparatus also adds a second chamber arranged to separate the first closure chamber from the opening into the collection chamber so that any sealing liquid passing from the first closure chamber enters the second separation chamber and then returns to the closed chamber instead of passing through the opening. It includes. The closure chamber is shaped such that any sealing liquid passing through the closure chamber is diverted in a direction other than the direction of normal flow so that the inflow fluid is circulated and bonded in the closure chamber.

The device is also located within the small arm compartment, which separates the closed compartment from the rest of the small arm compartment, and has a wall member having a hole, the dimensions and shape of which are normally open and largely open to determine the actual opening and closing of the hole. And valve means that tend to close the aperture in response to fluid entering the closure chamber from the junction of the small arm compartment. The valve means includes a bowl whose dimensions and shape are determined so as to seal and close the hole in practice. The aperture includes a notch to allow the sealing liquid to enter the closure chamber as the bowl valve seats and closes the opening almost so that the sealing liquid is diverted in the closure chamber across the direction of normal flow. The remainder of the small arm compartment is constrained to keep the bowl valve operable between the restriction and the aperture. The remainder of this small arm compartment has a smaller cross section than that of the closed compartment. In one preferred embodiment, the outside air containment means comprises a one-way check valve arranged and oriented in the small arm compartment. The valve permits the passage of suction flow from the collection chamber to the suction inlet when open and prevents outside air from passing into the collection chamber when closed. One check valve is located near the opening through which the small arm compartment communicates with the collection chamber.

Preferably, the apparatus further comprises an airflow meter disposed at the junction of the small arm compartment and the other end of the large arm compartment. The air flow meter provides a measure of the amount of gas from the body cavity. The apparatus also includes a check valve means disposed in the large arm compartment. The check valve means tends to be closed and open to allow outside air to go to the seal chamber in response to the actually increased pressure in the seal chamber. The present invention also relates to a chest dispensing device for discharging liquid from a body cavity or portion thereof, the apparatus comprising: a housing and formed in a housing including an inlet for collecting liquid and for inflow of liquid and fluid communication with the body cavity and portion thereof A large arm compartment having a suction inlet at one end for connection to a suction source while preventing the passage of outside air into the collection chamber within the housing and in communication with the collection chamber at one end and at the other end of the large arm compartment A seal chamber comprising a small arm compartment in communication with the other end of the means, the small arm compartment having means near one end to prevent outside air from passing into the collection chamber when the collection chamber has a relatively high negative pressure; Can be used to control the degree of vacuum formed in the housing and imposed on the collection chamber and in the plurality of chambers. In fluid communication with the collection chamber, between the suction inlet and the outside inlet, the first inlet connecting to the suction inlet of the sealed chamber, the second inlet communicating with the outside air, and the degree of suction imposed by the collection chamber at a plurality of predetermined suction set levels. And a suction control chamber comprising an anhydrous means arranged, an indication means arranged between the adjusting means and the first inlet to provide an immediate confirmation of the proper operation of the suction in the collection chamber.

Preferably, the housing is formed of a front wall and a rear wall sealed together along its circumference by a plurality of side wall members. The front wall includes an integrally formed handle and the suction inlet and the collection chamber inlet are respectively disposed on the first side wall common to the sealing chamber and the collection chamber. Further, the outside air inlet to the suction control chamber is disposed on the second side wall in the vicinity of the first side wall.

The device also includes an elongated support stand rotatably fixed to a third side wall opposite the first side wall such that the support stand can be rotated from a storage position to a support position that typically crosses the third side wall so that the housing is in a predetermined position. Supports stably at The support stand can be fixed in the support position.

Preferably, at least portions of the housing are transparent to view the contents or operation of each foundation of the collection chamber, seal chamber and suction control chamber. At least selected portions of the front wall member are also marked with scales to identify the volume of their contents, and marked with predetermined indicators for providing indication information.

Furthermore, the present invention relates to a device for discharging liquid from a body cavity or part thereof, comprising: a collection chamber for collecting fluid, including an inlet for inflow of fluid, and one end connected to the collection chamber inlet and the other end being a body cavity or part thereof; A tube provided for the insertion of the tube, comprising compression means shaped and dimensioned to adequately retain a portion of the tube under compression to provide self sealing capability of the tube portion, the compression means being exposed to the tube and the insertion of the hypodermic needle A first inlet connecting to the suction source, a second inlet communicating with the outside air, and a plurality of predetermined suction settings, in fluid communication with the collection chamber to provide access to the interior of the city tube and to regulate the degree of vacuum imposed within the collection chamber. Level means that the aspiration means placed between the suction inlet and the outside air inlet, while controlling the To provide immediate confirmation of proper operation of suction and a control room that contains the indicating means disposed between the regulating means and the suction inlet.

Preferably, the compression means is formed of two similarly curved elongated plate members having flanges extending along each corresponding edge. The plate members are fixed to each other along the flange, and the plate members facing the boat are relatively rigid to prevent penetration of the hypodermic needle.

Preferably, the transverse inner diameter of the curved plate member is smaller than the transverse outer diameter of the tube. According to one preferred embodiment, the transverse inner diameter of the curved plate member is about 4/5 of the transverse outer diameter of the tube.

The present invention also relates to an apparatus for supporting a housing from a support, comprising: a bracket member having a strut member which is formed of at least one wall and can be disposed on the housing, and from the first storage position to the second suspension position. A hook member having one end rotatably fixed relative to the holding member for selective rotational movement of the other end, the other end of the hook member being defined in shape for engagement with the support, and having one end of the hook member The bracket is shaped and dimensioned such that the hook member retains the locking in the suspended position.

Preferably, one end of the support device is curved in the shape of a hook with a minimum gap distance of the hook-shaped end smaller than the diameter of the strut member such that the hook-shaped end is the minimum distance when the hook member is selectively rotated with respect to the second suspension position. Away from the strut member firmly advancing toward it and thus the hooked end is elastically spread to lock the hook member in the second suspension position. The retaining means is shaped for attachment to the housing to securely hold the hook member when in the first storage position. The other end of the hook member is curved to allow suspension from the support. In a preferred embodiment, the bracket and the hook member are disposed on each of the two opposing walls of the housing.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Referring to FIGS. 1 and 4, three chambers, a collection chamber 12 for holding and storing the liquid collected from the body cavity, for preventing liquid from entering the collection chamber 12 during a high level of negative pressure in the body cavity. A chest discharge device 10 is shown having a water seal chamber 14 and a dry suction control chamber 16. The functions and operations of these various yarns are described in U.S. Pat. have. In addition, the purpose and general operation of the various chambers of the inventive thoracic learning apparatus 10 are also better described in the Decnatel Incorporated Pleur-evac publication (1985) entitled "Understanding the Thoracic Discharge System". . Accordingly, the technology of the above patents and publications is directly related to the present application.

The collection chamber 12 is formed on the right side of the line “AA” as shown in FIG. 4 and is divided into four separate collection compartments 18 formed between each pair of walls 26, 28, 30, 32, 34. , 20,22,24). However, the collection chamber 12 of the present invention is not limited to the number of separate collection compartments, and any number may be provided if desired. Likewise, the volumes of the various collection compartments may be uniform or different if desired.

An inlet port 36 is located in the upper wall 38 to allow liquid and gas to pass directly from the body cavity to the collection compartment 18. For a more accurate measurement of the collected liquid, at least the collection compartment 18 is dimensioned and shaped to have a minimum volume and the remaining compartment is larger to accommodate larger amounts of collected liquid. In addition, as shown more clearly in FIG. 6, the inclined wall member 19 allows the lower portion of the compartment 18 to be smaller than the upper one, thus providing a smaller volume measurement. As shown more clearly in FIG. 6, the opening 27 in the wall 28 allows liquid overflow from the compartment 18 to first pass into the compartment 20. Likewise, overflow from compartment 20 passes over upper edge of wall 30 to compartment 22 and from there past compartment upper edge of wall 32 to compartment 24. Thus, the upper edges of the walls 30 and 32 are at approximately the same height to allow for overflow.

A high negative pressure valve 40 is located on the upper wall 38 in communication with the collection chamber 12. The high negative pressure valve includes a bottom operated valve that, when depressed, directs filtered air into the collection chamber 12. In this way, the undesirable high negative pressure generated in the body cavity and advancing in the collection chamber 12 is reduced.

As shown in FIG. 4, a sealing chamber 14 is formed between the lines "A-A" and "B-B". In particular, the sealing chamber 14 includes a small arm compartment 42 formed between the walls 34 and 44 and a large arm compartment 46 formed between the walls 44 and 47. Although the seal chamber is typically operated with a liquid such as a predetermined level of water, the seal chamber 14 of the present invention can be operated "dry" or "wet" as described in more detail below. If necessary, as shown in FIGS. 1 and 4, the air flow meter 48 ′ may be located at the lower junction portion of the small and large arm compartments 42 and 46. The air flow meter 48 'is of the type described in US Pat. No. 3,683,913, which is intended to be "wet" and is directly related to the present application. However, even if operated "dry", the weather vane 48 'does not adversely affect.

The sealing chamber 14 includes a valve mechanism in a small arm compartment 42 that includes a plate member 48 and a roll floating valve 50, and the bowl floating valve includes a plate member (as shown in FIG. 4). Move freely between 48) and the retracted portion of the small arm compartment 42. However, as shown more clearly in FIG. 8, the constriction portion is structured such that the float valve 50 does not block the lower portion of the small arm compartment 42 during operation under suction.

As shown more clearly in FIG. 8, the plate member 48 includes a circular opening 52, which is a small arm due to an unfairly high negative pressure of a liquid such as water contained in the water seal chamber 14. The float valve 50 is shaped and dimensioned to be seated in the opening 52 when pulled out toward the collection chamber 12 through the opening 54 in the upper end of the compartment 42. A similar valve arrangement is described in US Pat. No. 3,683,913 as a cylindrical valve member for holding water or liquid in a water seal chamber. However, the plate member 48 according to the present invention bypasses the bowl floating valve 50 and enters a notch or key that allows liquid or water to form a water seal chamber to enter the upper end 58 of the small arm compartment 42. Way slot 56 is included. Within the upper compartment 58, the liquid bypasses the boll float valve 50 and circulates in a direction transverse to the suction or normal flow and diverts in the wall forming the upper compartment 58.

Preferably, the top compartment 58 is shaped and dimensioned to receive the entire fluid volume in the water seal chamber. In this way, water in the water seal chamber is prevented from escaping into the collection chamber when the high negative pressure developed in the collection chamber 12 is generated. Such high negative pressure may be caused by deep breathing, coughing or choking of the patient. It can also occur when the suction tube is closed or when aspiration occurs when the treatment aspiration fails. High negative pressure can also occur when the patient is in a vent. High negative pressure also occurs when a doctor squeezes a tube through a discharge device. In the latter case, squeezing is a process in which a clot in the tube enters the collection chamber 12 by holding the tube with one hand after the clot and squeezing the tube toward the collection chamber 12 to advance the clot.

Although the small arm compartment 42 is shown as a float valve 50 in the compartment, the shape of the top compartment 58 is such that any liquid passes from the water seal 14 to the collection chamber 12. Suitable to prevent Thus, the float floating valve 50 is an additional safety device that can be arbitrarily associated and can be used as the structure of the upper compartment 58. An additional chamber, or separation chamber 59, separates the closed or upper compartment 58 from the opening 54 to help prevent liquid from passing into the collection chamber 12. Preferably the separation chamber 59 has an inclined bottom surface 61 as shown in FIG. 4 and the opening 54 is located at the top of the wall 63.

As another example, the seal chamber 14 can be operated dry without any liquid needed to maintain the seal. In such a case, as shown in FIG. 8A, the floating float valve 50 may be replaced with a check valve 51 seating in the compartment 58 and around the opening 52. The check valve 51 is a one-side valve which allows suction flow in the direction of arrow "C", but closes or prevents outside air or atmospheric flow to the collection chamber 12 in the direction of arrow "D".

The upper end of the large arm compartment 46 of the water seal chamber 14 is in fluid communication with the suction inlet port 60 and the constant pressure relief valve 62, as shown in FIG. Alternatively, the valve 62 may be located in the opposing arm compartment 46 of the seal chamber 14 or the suction line itself, if desired. The valve 62 includes a valve member 63 'as a check type that is normally closed. It is opened so that the increased pressure in the sealing chamber 14 can escape to the outside air or the atmosphere in response to the actually increased pressure in the sealing chamber 14.

The chest discharge device 10 according to the invention also comprises a suction control chamber 16 comprising a first compartment 64 formed between the walls 47, 66 and a second compartment 67 formed between the walls 66, 68. ). The upper end of the first compartment 64 is in fluid communication with the suction inlet port 60 together with the upper end of the large arm compartment 46 of the water seal chamber 14. The upper end of the second compartment 67 formed between the walls 66 and 68 includes an anhydrous suction regulator 72 housed on top of the second compartment 67 as shown in FIG. The upper end of the compartment 67 has an opening 74 in communication with the confrontation or outside air around the chest discharge device 10. The suction regulator 72 is shaped and dimensioned to seat the opening 78 in the plate member 80 that separates the second compartment 67 into the upper and lower portions as shown in FIG. The valve plate 76 is included. As evident in the figure, the valve plate 76 is positioned at the bottom and of the rod 84 whose other end is fixed to the rotatable jaw coupling or collar 86 'which is annular in the top wall 38. It is biased in the closed position by the coil spring 82 fixed to the hook end. The other end of the rod 84 is located in the hollow of the annular collar 86 '. The collar 86 'has a keyway ridge received in the groove along the upper end of the rod 84. In this way, the rod 84 can be rotated with the collar 86 'and can be advanced upwards or downwards as described later. As shown more clearly in FIG. 13, the valve plate 76 is formed on the end of the dash port 86 fixed in the plate member 80 which is smaller than the plate member 80 so as to pass the atmosphere. Dash pot 86 is a type commercially available from Airport Corporation, Lois Street 27, Connecticut, United States, under the trade name. Dash port 86 attenuates rapid modulation of valve plate 76 that may occur during operation of chest discharge device 10. Preferably the dash port 86 includes a graphite plug 90 attached to the stem 92 of the valve plate 76. The graphite plug 90 is located in a recess formed of a glass annular portion 94 that provides a non-bonding surface with the graphite plug 90 to avoid sticking of the part.

As shown more clearly in FIG. 13, the plate valve plate 76 is a plain plate with circular beads 96 for seating against the plate member 80 and around the opening 78. As such, the valve plate 76 on the cross section provides a single point of contact between the bead 96 and the plate member 80. This eliminates large contact surface areas to prevent sticking of the valve plate 76 which may be caused by moisture. Preferably, the valve plate 76 is formed of high density polyethylene, which is more flexible than the plate member 80, but in this way the valve plate 76 more easily conforms to the irregular surface in the plate member 80, thereby opening 78 ) To ensure proper sealing.

The rod 84 has a worm gear, which interacts with the pinion gear 100 located on the shaft 102 supporting the rotary position disk 104 with the lever arm 106 as shown in FIG. 98) with the part included. Thus, when the pinion gear 100 is rotated in accordance with the movement of the lever 106, the worm gear 98 and the rod 84 proceed upward or downward while the collar 86 remains fixed or non-rotating. The tension of the spring 82 is varied to provide the amount of force that seats the valve plate 76 relative to the opening 78. Such tension can be calibrated to provide a number of predetermined settings that correspond to the amount of suction imposed on the collection chamber 12 and the pleural cavity of the patient and thus can be displayed on the disc 104 dial. In order to provide an accurate position of the disc-in dial 104, a series of corresponding detents 106 'are provided along a defined portion of the circumference of the disc-in dial 104 to correspond to a predetermined set of detents corresponding to a set level of suction. Any one of 106 'interacts with the upper arm 108 on which its outer end rests. The upper arm 108 is supported from an outer wall 68 that includes an opening 74 that allows outside air or atmosphere to enter the suction control chamber 16. As noted above, the rotation of the collar 86 'allows the rod 84 to proceed upwards or downwards, with the disk-in dial 104 in a given position to provide proper calibration of the suction level setting.

The suction control chamber 16 includes a visual indicator that immediately confirms proper operation of the suction in the collection chamber 12. Such visual indicators are described in more detail below.

As shown in FIG. 1, the discharging device 10 is usually formed of a housing comprising a front wall 110 fixed to the rear wall 112. The front wall 110 and the back wall 112 are four sidewalls including a top wall 38, a right wall 26, a left wall 68 and a bottom wall 114 as shown in FIG. Are combined by. As shown in Figures 6-10, the different walls and sides may have different shapes to accommodate different seals defined therebetween. In one preferred embodiment, the housing may be integrally formed with all the walls joined along its perimeter. Alternatively, the separated side walls and the front and rear walls can be secured to each other by suitable means known to those skilled in the art. According to the preferred embodiment shown in FIG. 1, the housing comprises a side bracket 116 as shown in FIG. 2, from which the discharge device 10 is supported rod 120, such as a hospital bed post. Hanger 118 extends so that it can be supported. In another embodiment, the device 10 includes a floor support stand 122 that is rotatably fixed relative to the bottom wall 114 as shown in FIG. Floor cock stand 122 includes a generally rectangular or elongated bar with a hole centrally located to pass through split collar 124 as shown in FIG. The bottom support stand 122, once assembled on the split collar 124, can thus rotate about its opening and the bottom wall 114 as shown in phantom as the element 126 in FIGS. 1 and 7. Can be positioned in a support relationship across the longitudinal axis of If necessary, the bottom support stand 122 may be secured after being placed in the support position. The housing front wall 110 also preferably includes an integrally formed handle 125 to facilitate transportation and handling.

In order to be able to see the contents of the collection chamber, the front wall 110, as shown in FIG. 1, is at least transparent at a certain portion 128 where several collection compartments overlay height. Also, the scale is engraved with a scale 130 indicating the amount of liquid collected. As noted above, the smaller volume of the first collection compartment allows for a more accurate measurement of, for example, 0 to 200 cc of liquid while the other compartment accommodates more volume. In this way, the physician can easily evaluate the performance of the chest drainage device 10 during the complete liquid removal procedure and over time by simply reading the height of the liquid most recently filled in the collection compartment.

The other part of the front wall 110 is also transparent to see the additional operating characteristics of the discharge device 10. In this regard, the small arm compartment 42 of the sealing chamber 14 is a transparent portion 132 so that the height of the liquid contained in the sealing chamber 14 can be seen. The length of the small arm compartment 42 is also engraved with a scale 134 so that the height of the liquid can be easily measured. Similarly, the air flow meter 48 'also has a transparent portion 136 that allows any bubble to be seen.

The grommet 138 is provided as shown in FIG. 1 to fill the liquid with the seal chamber 14. Similarly, a grommet 140 is provided on the front wall 110 to allow the injection of liquid into the junction of the first and second compartments 64, 67 in the suction control chamber 16 as needed. The grommet 138, 140 is. And an intermediate rubber portion 142 that allows the injection of fluid by a hypodermic needle that penetrates but does not damage the rubber seal and then self-seaps while maintaining the integrity of each seal or portion thereof.

As shown in FIG. 1, the discharge device 10 is connected to the suction source by a straight tube 144 connected on the suction inlet port 60. Similarly, a tube 146 is provided for connection to the collection chamber inlet port 36 and has another end adapted to be inserted into the body cavity or a portion thereof for removal of gas and liquid, if necessary.

In addition, the suction control chamber 16 forms the basis of the transparent portion 148 which, when used as needed, allows the viewing of any bubble action in the seal portion and thus provides a visual and auditory confirmation of the suction operation. Similarly, the first compartment 64 of the suction control chamber 16 also allows the transparent portion 150 to be visually confirmed in operation as described in detail below. In this way, the surgeon can easily determine whether the discharge device 10 is operating properly when viewed through the transparent portion 148 or 150. In order to enable visual determination of the suction setting at an appropriate level of the required, a display portion that easily instructs the degree of suction selected by the movement of the lever arm 106 extending through the opening 74 of the left wall 68. The disc 104 can be seen through the transparent portion 152 with 154 engraved thereon. Indicative information may be provided on the face of the front wall 110, which is shown in other locations 156, 158.159.

5 shows another embodiment 10 'of a chest ejection device 10 according to the present invention. For convenience, the same reference numerals are given to elements of the chest ejection apparatus that are common to the elements in the embodiment of FIG. 4. However, the embodiment of thoracic discharge device 10 'of FIG. 5 is connected to suction control chamber 16 through opening 54 of wall 63 without a sealing chamber as shown in the embodiment shown in FIG. It has a collection chamber 12 in direct fluid communication. therefore. In Fig. 5, the collection chamber 12 is formed on the right side of the line "A-A" and the suction control chamber 16 is formed on the left side thereof.

During the drainage process, it is sometimes advantageous and desirable to take fresh samples of liquid drainage from the patient for cultivation purposes or other test treatments. It is also advantageous to provide the patient with the introduction of antibiotics as well as other drugs when an infection is detected. According to current methods for obtaining discharge samples, some chest discharge devices include a reusable location in the collection chamber 12. In this method, however, the clinician or physician cannot obtain a new sample because the collection chamber 12 always contains liquid collected over time. In addition, such reusable sites do not allow cold depressants of any medication to the patient. Another common method is to sample a tube, typically formed of latex, directly through the patient. The latex tube manufacturer claims that the latex tube is self-sealing, but tests indicate that leakage occurs under normal operating conditions. Another drawback with such a sample / injection method is the possibility, for example, that the hypodermic needle penetrates both walls of the tube and possibly punctures the clinician's skin and damages it. Thus, there is a risk of blood contact by the clinician each time a sample is taken or injected into a latex tube.

Therefore, the present invention also includes a device for compressing the latex tube 146 which extends from the suction inlet 36 and whose other end is inserted into the body cavity or part thereof through which liquid and gas are discharged. According to the compression device 159 of the present invention, as shown in FIG. 14, the cooling agent of the drug is passed through the latex tube 146 without the risk of contamination or leakage by the clinician due to the puncture that may occur by subcutaneous injection. Fresh discharge samples may be provided. The compression device 159 of the present invention maintains at least a portion of the wall of the tube 146 in a compressed state, thus providing self sealing of the tube wall and additionally providing access by a hypodermic needle.

Device l59 includes a pair of compression plates, ie, upper compression plate 160 and lower compression plate 162 having a transverse inner diameter that is less than the transverse outer diameter of tube 146 when assembled. Compression plates 160 and 162 are similar in structure and are curved as shown in FIG. As shown in FIG. 14, the flange 164 along each longitudinal edge is along each edge of the compression plates 160,162 by suitable means such as glue, welding, and other means known in the art. It allows you to fix it. The upper compression plate 160 includes a central port or window 166 that allows the tube 146 to be exposed. Because the transverse inner diameter of the assembled compression plates 160 and 162 is smaller than the transverse outer diameter of the tube 146 (preferably 20%), the tube 146 is the window of the upper compression plate 160 as shown in FIG. 166 extends outward. In this way, the tube 146 at least in the portion of the window 166 is maintained under compression so that the tube 146 is self-sealing when the hypodermic needle is injected through the window 166 and the tube 146 and then removed. And any leakage of liquid is prevented. Preferably, as shown in FIG. 15, the tube 146 is also bonded with a suitable solvent in the portions 168 and 170 in the vicinity of the window 166. This allows the tube to be retained even though the tube is handled or pulled on the outside of the compression device 159, especially the portion around the window 166. Such handling of the tube occurs when the surgeon squeezes the tube 146 as described above, for example, to remove any clot from the discharge line. By means of gluing 168, 170 the tube is securely held in its position in the compression device 159. At least the back plate member is relatively rigid to prevent penetration of the hypodermic needle into the clinician's skin as described above.

Referring to FIG. 4, as described above, the visual indicator is a junction between the first compartment 64 of the suction control chamber 16, in particular the large arm compartment 46 of the sealing chamber 14 and the first compartment 64. It includes a floating member 172 located in the upper portion of the vicinity. The floating member 172 can move within the restricted region 174 determined between a pair of strut members 176 and 178 serving as a stop for limiting the movement of the floating member 172 within the restricted region 174. Its dimensions and shape are determined. The floating member 172 is critically dimensioned like the restricting region 174 so that the floating member is controlled by the anhydrous suction regulator 72 when a predetermined set level of suction is obtained in the collection chamber 12. Move upward within 174). Thus, in such a case, the floating member 172 rises toward the stop, ie the support member 176, when an appropriate predetermined level of suction is achieved and overcome. In order to be able to see the floating member 172, the front wall 110 has a projection 150 that allows the floating member 172 to be visible when moved upwardly toward the support member 176. This provides the physician with an immediate visual confirmation that the chest discharge device 10 is performing proper suction operation in the collection chamber 12. Preferably, the floating member 172 is painted in contrast to its surroundings for easy viewing. In a preferred embodiment, the floating member 172 is fluorescent for immediate visual confirmation of proper suction operation, even in weakened light or night conditions.

In particular, the dry or anhydrous suction control chamber 16 is independent of the liquid providing the degree of suction in a typical discharge device. However, liquid evaporation in such a typical discharge device results in a change in suction pressure. Such fluctuations can be avoided by the dry suction control chamber 16 of the present invention, which is not dependent on the liquid controlling or regulating the suction.

Thus, the anhydrous suction regulator 72 of the present invention does not employ water for suction control. In operation, the set position of the suction level is achieved by turning the disk, ie the dial 104. The position of the dial 140 causes the spring 82 to lengthen accordingly. A force is applied to the valve plate 76 seated in the opening 78 by the extension of the spring 82. The force applied is a function of the degree of spring elongation and the physical properties of the spring. Once suction is applied to the suction chamber 12 and to the chest cavity or body of the patient, a force is applied to the valve plate 76. If the force exerted on the valve plate 76 caused by the suction applied exceeds the force supplied from the extension of the spring 82, the valve plate 76 is displaced to allow outside air or air to enter the chest discharge device. In particular, the atmosphere passes through the opening 74 and in the opening 78 of the wall 80, the small wall 88, the opening 79 of the wall 81, and the second compartment 67 of the suction control room 16. And enter through the first compartment 64 and upward from the suction inlet port 60. The valve plate 76 is balanced in force so that the displacement is maintained until the valve plate 76 is seated again to seal the opening 78. However, the adjustment of the suction applied as described above provides for rapid modulation of the valve plate 76 when the difference occurs. In order to reduce or mitigate such modulation, a dash port 86 has already been described, the structure of which is described above.

According to the shape and position of the regulator 72 in the chest ejection device 10, a good airflow is provided that allows the removal of air preferentially from the patient rather than from the anhydrous suction regulator 72. This is ensured by the area of opening 78 which is larger than the minimum cross-sectional area of the passage of any seal. Thus, the system allows for air leakage and fluctuations in aspiration source levels in the patient while maintaining a predetermined additional set level of suction in the collection chamber 12. Thus, the chest discharge device 10 according to the present invention is unaffected by pressure fluctuations irrespective of its suction source, and is scheduled when controlled by the anhydrous suction regulator 72 and displayed by the dial 104 setting. Depending on the level of aspiration, a constant level of aspiration is provided.

In comparison, a typical dry chest discharge device regulator system employs a restrictive orifice positioned in a suction application line. Such a system does not maintain the required suction pressure level and rather restricts the volume of air through such a system.

In another embodiment of the present invention, the floating member 172 may be optionally replaced by a bubble tube indicator that provides an immediate visual and auditory confirmation of the appropriate level of suction in the collection chamber 12. The bubble tube indicator includes a bubble tube region formed at the junction of the lower end of the first compartment 64 and the second compartment 67 of the suction control chamber 16. A predetermined amount of liquid enters the bubble tube zone and thus, under operating conditions, the outside air or atmosphere entering through the anhydrous suction regulator 72 passes through the bubble tube zone and creates bubbles toward the suction inlet port 60 to collect chamber 12. Provides an audible confirmation of the proper operation of the aspiration. Visual confirmation is also provided by providing a transparent portion 148 on the front wall 110 as shown in FIG. Thus, as shown in FIGS. 1 and 4, it is possible to hear and see if the chest ejection device 10 is operating properly.

However, the valve plate 76 is not a complete seal and, in most cases, allows some air or outside air to pass toward the suction inlet port 60, so that the first compartment 64 and the second compartment 67 are closed. The separating wall member 182 is provided with a passage 180 of critical dimension and it is located at a point above a predetermined amount of liquid entering the bubble tube region. In this way, the leaking air bypasses the bubble tube zone and moves directly to the suction line without operation yet to be given false alarms because suction of the predetermined set level is still obtained. As described above, the grommet 140 is provided and liquid is introduced therethrough. Alternatively, a flexible injection tube (not shown) of appropriate dimensions may be inserted through the suction inlet 60 and located below the bottom of the first compartment 64 and thus provide for the inflow of liquid.

Similarly, the injection flexible tube can also pass into the large arm compartment 46 of the seal chamber 14 to provide an inflow of liquid. The operation of such other methods eliminates the need for the grommet 140, 138 as shown in FIG. 1. Thus, after a predetermined amount of liquid has been injected into the bubble tube zone, the atmosphere passing through it creates bubbles in the suction control chamber 16 when the applied suction exceeds the set point imposed. The bubble tube zone and the anhydrous suction regulator 72 are designed such that the addition or removal of water in the bubble tube zone does not affect the suction level imposed. The bubble tube zone and the first compartment 64 and the second compartment 67 include deflection plates 184 and 186 to help prevent any liquid in the bubble tube zone from rising and escaping into the seal chamber 14. In addition, the height of the second compartment 64 is selected to help prevent such outflow. In particular, the predetermined amount of liquid in the bubble tube zone is below the level required to open the valve plate 76. In comparison with the floating member 172, the predetermined amount of liquid corresponds to the inertial mass of the floating chamber 172.

Although the anhydrous suction regulator 72 of the present invention has been described in connection with the chest discharge device 10, it may also be applied to control the suction of other drainage devices. As shown in FIG. 4, the wall members 190, 192 and 194 are provided for additional support.

As shown in FIG. 17, the hanger device 118 according to the present invention includes a bracket member 116 formed of two opposing walls 272, 274 having a strut member 276 extending therebetween. do. As shown in FIG. 17, one of the walls 272 is attached on the side 26 of the discharge device 10. Opposing walls 272.274 are joined together at a common sidewall 273, the function of which is described more clearly later. The hanger device 118 also includes a hook member 278 formed of curved wire at both ends. At its upper end, the hook member 278 has a larger curve to accommodate the larger diameter of the bed post 120, for example. At the curved bottom end, the hook member 278 is hooked so that the small curve end can be positioned relative to the strut member 276. The small curve end has a minimum spacing distance indicated by the letter "A" smaller than the diameter of the strut member 276. The smaller curve end of the wire 278 is elastic so that the hook-shaped small curve end proceeds firmly towards the minimum spacing distance "A" when the hook member is selectively rotated relative to the suspension position as shown in FIG. Away from the strut member 276 so that the hooked end is elastically stretched to lock the hook member in the suspended position.

When the hanger member is not needed to support the housing, the support member (from the minimum distance or spacing that moves the hook member 278 and snaps elastically back to the previous gap distance to hold the hook member relative to the support member 276). 276) can be pulled out. The hook member can then be rotated downward and the hook member 278 is held against and over a retaining shoulder 279 positioned under the bracket 116 as shown in FIG. In particular, the hooked end can rotate relative to the strut member 276 but is always maintained therein as the common sidewall 273 prevents the hooked end from separating the strut member 276. Alternatively, if the common side wall 273 is not provided, the front wall 110 extends about the side wall as shown in FIG. 17 and thus if the hooked end advances past the strut member 276 it is eventually forward. It is coupled to the light stem of the wall 110 and will no longer be allowed to move. This holds the hook member once again against the bracket member 116.

18, another embodiment of a hanger device 118 according to the present invention is shown. In this other embodiment, the bracket member 280 includes a wall 282 that extends while having a support member 284 attached to the sidewall 26 of the housing at its other end. Wall 282 extends to front wall 110 as shown in FIG. 18. The hanger device 118 also includes a hook member 286 made of wire that is curved at both ends, as in the case of the hook member 278. Similarly, the purpose of the hooked or curved end of the hook member 286 is similar to that already described with respect to the hook member 278. However, the hook member 286 has a bent portion 288, so that the hook member 286 is shown in the solid position of the hook member 286 in a vertical position from the storage position shown by the imaginary line 290. When the hook member 286 is pressed downward to rotate the curve end of the hook member 286 with respect to the holding member 284, as rotated in the above manner with respect to the hook member 278, 288 may lie on an upper portion of wall 292.

In the embodiment shown in FIG. 18, a hump bracket 294 is included to receive a wire frame or cage 296. In particular, the wire frame is as shown in FIG. 19 and includes an eye portion 298 that walks and secures with respect to the lower leg 200 of the device or housing or front wall 110. Wire frame 296 supports a bag 202 of the type employed in an automatic injection device as described in US Pat. No. 4,443,220, which is hereby fully related. And a tube 204 connected to the body cavity of the infusion device patient to allow fluid to exit and a tube 206 connected to the inlet 146 of the discharge device 10. In particular, an automatic infusion device is involved so that the collected liquid can be returned to the patient if the need arises before the same collection in the discharge device 10.

The present invention has been described in detail with particular emphasis on the preferred embodiments. However, it will be understood that changes and modifications may be made to those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention.

Claims (5)

An apparatus for supporting a housing from a support rod (120), which is a support, comprising: a bracket (116) having a strut member (276) formed from at least one wall and extending therefrom that can be disposed on the housing; A hook member 278 having one end rotatably fixed relative to the strut member for selective rotational movement from the position to the second suspension position, and the other end of the hook member 278 engages the support. Its shape is set for you. One end of the hook member and the bracket are shaped and dimensioned so that the hook member holds the lock in a suspended position. 2. The hooked portion according to claim 1, wherein the one end is curved in a hook shape with a minimum separation distance of the hook-shaped end portion smaller than the diameter of the strut member so that the hook member 278 is selectively rotated with respect to the second suspension position. An end can be obtained from the strut member firmly advancing toward the minimum distance such that the hook-shaped end is elastically stretched to lock the hook member (278) in the second always suspended position. 3. Apparatus as claimed in claim 2, characterized in that the holding means are shaped for attachment to the housing so as to securely hold the hook member (278) when in the first storage position. 4. The device of claim 3, wherein the other end of the hook member (278) is curved to allow suspension from the support. 5. Device according to claim 4, further comprising a bracket (116) and a hook member (278) disposed on each of the two opposing walls of the housing. SUMMARY OF THE INVENTION The present invention relates to a housing support device for a bodily fluid ejection device, for which the housing support device is formed from at least one wall and has a bracket having a strut member which can be disposed on the housing and from the first storage position. A hook member having one end rotatably fixed relative to the strut member for selective rotational movement to a second suspension position, the other end of the hook member being shaped and engaged for engagement with the support; One end of the hook member and the bracket are shaped and dimensioned such that the hook member holds the lock in the suspended position.